Wow, I could have so much fun with this thread.... multiple posts with an elaborate timeline that would bore everyone to death before they got even a third of the way through it, so I'll boil it down to the basics. I warn you, my personal 'head-canon' is all over the place.
1. The events of the Reeves-Stevens's novel
Federation are canon, and the 'true' crossover between TOS and TNG. The Generations movie is de-canonized.
2. The events of John M. Ford's
The Final Reflection are canonized, and Klingon culture is as he represents it. This includes the appearance of Carter Winston and the infamous events of the Dissolution Babel Conference, the timeline of Klingon first contact, the practice of
Tharavul, and the existence of Imperial Klingons (ridges), Human Fusion Klingons (TOS), and Romulan-fusion Klingons (only seen in the novel).
3. The events of Margaret Bonnano's
Strangers from the Sky are canonized, and tell the true story of Vulcan first contact before the 'official' first contact takes place. Furthermore, her version of official first contact is the one that happens in the Prime Timeline, not the one altered by the events of the movie First Contact.
4. In the Prime Timeline, the events of Enterprise are somewhat different. The biggest difference is that there is no Starfleet, only UESPA, and the
Enterprise herself is named
Discovery. This is changed to what we see in the Enterprise TV show by the events of the movie First Contact. For an expanded timeline of this period, see:
https://www.trekbbs.com/threads/the-long-sleep-alternate-enterprise-era.283132/
5. The events of TUC are as I depict them in my fanfic here, which uses John Ford Klingons and his version of Klingon culture:
https://www.trekbbs.com/threads/star-trek-vi-tuc-redeux-with-john-m-ford-klingons-v2-0.311884/
6. Star Trek Vanguard is totally canon.
So, the timeline and continuity looks something like this:
Prime
Strangers from the Sky
Federation
The Final Reflection
UESPA
Vanguard
TOS
TMP
TWOK --> TVH
(ST V is erased- never happened, no Sybok)
TUC (my version)
TNG / DS9 / VOY
ST: First Contact (Generations does not happen). This event results in a split timeline leading to:
Separate Timeline (Slightly accelerated technological development)
ST: First Contact (Catalyst event)
Altered Initial Warp Flight
Altered First Contact with Vulcan
Enterprise
SNW (Disco is erased- never happened)
???
Kelvin Timeline? Nah. Never happened. F--k JJ-Trek- I cannot accept any timeline in which a cadet leapfrogs his way into the captain's chair, the destruction of Vulcan, the light-year spanning transporter, or any of the other nonsense we were saddled with in that dreck.
I have no real head canon going beyond STFC. I don't really like the remainder of the TNG movies and the Picard series was mostly a disappointment, so the late 24th / early 25th centuries are sort of wide open. Some of the novel-verse stuff was really good.
Bear in mind, this is scratching the surface.
