I could be wrong, but, as I understood it, the tiered system was more for resolving continuity errors and retcons; generally when there was an inconsistency, the higher-tiered material was considered to be the correct version.
That was almost certainly the intent from Lucasfilm's licencing people's POV, but certain fans (including it seems the wiki editors) took it a bit far to the point where they convinced themselves that this system meant "everything was canon", hence the common misconception that Disney "de-canonised" the EU. Which is impossible since the EU was never canon to begin with. What they really did was essentially archive the EU so there'd be a clear delineation between the old "Legends" and the new stuff which is meant to be canon.
Not that there isn't some deliberate branding going on on their side, but I doubt they had any intention of "taking away" the EU from fans. Quite the contrary, the 'Legends' thing just meant they got to reprint and sell this massive back catalogue they just bought.
Now granted, the Clone Wars show largely did its own thing and did contradict a lot of older tie-in novels, which is where it does get really convoluted. The TV show always had seniority, so it's material became the "real" version. From there the lower level tie-ins would either try to create some kind of retcon to reconcile the two versions (usually published in a reference book or simply stated on social media by a LucasFilm employee) or just chose to disregard the inaccurate version as just that and move on.
So far as I'm aware, TCW was always conceived as being just as canon as the movies and was considered as such by Lucas who was heavily involved and who's opinion on the subject was the only one that really mattered.
So, by the end of Legends' life, there were a fair number of books and comics that were basically said to be overall canon, but specific parts and elements of those stories were not (e.g.: The story happened but marker out the pages where character X died and assume that the story happened without them).
Which is where the very concept of "canon" utterly breaks down. As I said before, it's a binary state. If you take a book that featured an event that in theory *happened* in canon, but the details are all wrong then that particular account is by definition not canonical.
Lets take for example the duel between Anakin & Ventress on Yavin IV. IIRC there are at least two accounts of it in the EU (a comic and the old Clone Wars micro-series) the circumstances around both accounts were entirely different and IIRC in contradiction to materials put out at the time of RotS's release which stated this is where Anakin got his facial scar.
Now it's all well and good saying both of these tell a version of events but however one feels about either (personally I am very fond of the micro-series) neither can be canon, even before the Disney buyout. I'm afraid it's an all or nothing proposition.
I personally didn't mind the system in and of itself, but I do think they stretched too hard in some cases to be as inclusive as possible and that, overall, the tie-ins being canonical was more lip service than anything else (given that the movies and TV shows always did their own thing regardless of what apple carts it would upset). I mean, I think the reboot has been an overall good thing. It's not only allowed new stories and some really good stuff, it's also cleaned up a lot of the more problematic stuff and streamlined everything.
The way I see it it's actually *expanded* the canon as before only the movies and much later the TV show counted, now just about everything they're putting out is included. As a result, they're being held to a much higher standard than before. Both in terms of quality and in terms of continuity.
I've heard a lot of extreme and moderate opinions from these fans. You got those who view the Disney materials as awful fanfiction and hold that the "Legends" version as the only true Star Wars material. Some of these have even insinuated that Disney/LucasFilm is morally wrong for putting the reboot into place.![]()
Oh sure, it's difficult to parse exactly what the overall feeling is since how many are vocal about a given stance varies wildly depending on the venue and whether or not it's just a small group being disproportionately loud.
They way I try and gauge it is off of the reactions of those LF employees who have the most contact with the fans as (unfortunately for them) they're generally the target of various fandom grievances. Based on that, I think you get a generally better sense at which way the wind is blowing.
On the other hand, you got people who simply enjoyed the stories, timelines and characters that only exist in the Legends materials and want more new stories for that version to run concurrently with the Disney materials.
It's kind of interesting seeing how, unlike other unpopular creative decisions with other franchises, this one actually has certain people campaigning for a continuation of Legends, although I do feel that it's gotten out of hand (with the bad apples causing trouble) and has always been an exercise in futility.
That whole thing was utterly baffling to me. I mean "I demand you continue this particular story" is a very strange way to express an appreciation for Star Wars, bordering on the psychotic. It actually put me in mind of 'Misery' with Lucasfilm as James Kaan and the fans as Kathy Bates.
Sure I can see that. Personally, I think that canon has nothing to do with good stories and that there should be some of each, but I do like knowing which stories fit into which categories.
You'd think it'd be that simple for most people, but there appears to be no shortage of people willing to get angry if Clone Wars contradicts some comic they liked or that Rebel has A-Wings showing up pre-ANH.
Huh, I understood that Droids was considered part of canon when Legends was around.
See? This is what I'm talking about!

Seriously though, Droids was a *very* 80's Saturday morning cartoon for kids. Canon is about as relevant a concern to that show then as it is to the Freemaker Adventures is now. I mean you may as well debate whether a Star Wars cereal box or duvet cover is "canon".
It's completely mental and yet it's all too common an argument, mostly because fans have decided that "relevant to continuity" is the same thing as "of value to the franchise".
I'm not sure I liked Splinter of the Mind's Eye that much, although it is interesting for its place in history and it is funny, esp. with hindsight of what future movies would establish.
I don't think it's the best story ever told (neither is 'Heir to the Empire' if I'm honest), but I find it has value both because it's technically the very first EU story before there even was such a thing and because it's a window into a movie that could have been made had things turned out differently at the box office.
In effect, yeah. Now, officially, there's no tier system now, but I'd be extremely surprised if the movies aren't first among equals and if some version of a tier comes back, esp. when the franchise gets larger and discrepancies become more common.
It's different now since it's all much more coordinated and semi-planned out so accidental contradictions are a lot less likely.
For example, anything regarding Ahsoka Tano has been essentially earmarked for Dave Filloni because that's his character and the story group are happy for him to be the one to dictate what that story is. So if for the sake of argument the director of Episode IX wants to feature her in some way, Dave has to be in on that conversation, assuming the LFSG don't nix it right off the bat.
This is also how we get something cool like the comic featuring Fenn Rau's encounter with Kanan/Caleb during the Clone Wars in the same week that encounter is mentioned on the show.
I'm not saying it's the reason that story exists, just that there's a degree of foresight in how these things are made now which makes any significant contradictions unlikely.
So yeah, while I'm sure the movies get first dibs on most things, since it's worked out ahead of time who's telling what story, it'll probably never be a serious issue.