Again, why are you assuming a revamp of the 70s cartoon would be a bigger hit then new animated series, that would more targeted to audiences today?
Think of it this way: two of the most popular episodes of Deep Space Nine ("Trials and Tribble-ations") and Enterprise (the two-part "In a Mirror, Darkly") were tributes/flashbacks to TOS episodes or situations. They were produced for modern audiences (1996 & 2005), and it would be a gross understatement to say they were met showered with praise.
The lesson here is that if the audiences of 1996 & 2005 loved trips back to TOS--after being exposed to all of the modern sci-fi TV & movies of their respective eras--yet still found themselves engaged in stories set in situations/visuals from the 1960s, then a new animated series--if as faithful--could stand a serious chance to succeed.
But that is a couple of episodes vs. an entire series, they did not base an entire series on nostaglia. The first season of TNG were they trying to ape TOS 20 years later, was their weakest.
I think one or two episodes of a show cashing in nostaglia is okay, but trying to gamble an entire series on it seems like a risk that may not pay off. And really we are talking about episodes that aired almost 10 and 20 years ago and the Mirror episodes certainly didn't prevent Enterprise from being cancelled. DS9 had one nostaglia episode and the rest of series was mostly dedicated to their own ongoing plot. Its bit naive to expect just because something worked for one episode of DS9 almost 20 years ago, will work again today with the entirety of TAS.
I think BTAS was the first time a lot of this stuff was done in Western cartoon and the anime imports from the 80s were often really censored.
On average, 1970s anime suffered severe edits or entire plots restructured (see Gatchaman's North American version, Battle of the Planets), but the 80s--in syndication--opened the door to series (ex. Robotech--despite some edits) were violence, death and other adult themes were exposed to audiences at a time where G.I. Joe lasers never killed anyone, and all pilots managed to eject from planes before the crash. The contrast was shocking, but audiences certainly embraced the imports' mature ideas.
There were still a lot of anime censorship, even in the 90s and early 2000s shows like Sailor Moon and One Piece were very censored. The censoring of anime may not have been as bad in the 80s as it was in the 80s, but it often was censored, look at Voltron.
Kids, young adults and older adults were fans of the series. On a personal note, I was a child when TAS premiered, and found it every bit as fascinating as the parent series.
But kids of today may not like the same things as kids from the 70s.
This seems like a very nostaglia based argument for revamping TAS, rather then a logical one.
Nostalgia/repsect fueled the episodes of DS9 and ENT, and results were successful.
But it does seem like you are basing your arguments on nostalgia instead of pragmatism.
Why not make a modern cartoon and have one or two episodes as a monuments to nostaglia, rather then trying to sell a cartoon from the 70s to kids today. That seems like a better plan to me.
I'm sure Star Trek TAS was good for the 70s, but I'm not sure it would be a big hit now, when animation is a far more competitive field then it was in the 70s.
Why do you feel it necessary to keep harping on that as if anyone were suggesting anything of the kind? The question is not whether it would "be a big hit now" -- the question is whether one is able to assess it by the standards of its time and understand factually that for its time, it was actually a well-made, respected, and successful show. If people are too blinded by modern tastes to appreciate older works like '70s animation or black-and-white movies or live radio dramas, warts and all, I say that's their loss.
Except the OP suggested spending money on updating the animation from the old show, for what I assume would be an updated release. If people like this show that is fine, it seems good for a 70s cartoon, but I'm not sure its worth the time and effort of updating it for today's masses. This show never really gained the popularity that most of the live action shows had, it doesn't have its dedicated forum on this site, for example. Again instead of trying to just revamp an old cartoon, I would rather CBS make a new animated series.