Not so much a series, more the odd feature-length animation based on the Shatnerverse novels. Sort of in the spirit of WB's various Batman and other superhero efforts on DVD. Sort of Clone Wars in what are potentially lost entries in the film series.
The Ashes of Eden is perfect. While mostly set between VI and the Generations opening scenes, it's framed at the beginning and end, with Spock visiting Kirk's grave and Starfleet carving up the Enterprise's saucer section - removing any evidence for Veridians to find. It also has that moment set during Kirk's younger days going up against the Vampire Cloud. I'd get Chris Pine to provide the voice for that part. Various TOS cast members back in their roles, with likely impersonators for Scotty and McCoy. It was done as a graphic novel and I loved that the villain was human and an old rival of Kirk's. Pulling the Enterprise-A out of mothballs and having it go down fighting, IIRC against Excelsior and the rest of Starfleet.
Then do The Return but some adjustment here and there to make it better. I like its mix of Kirk and Spock alongside a TNG crew (split between differing new assignments after Generations) plus Bashir & Quark putting in a cameo. The female Romulan with a grudge against Kirk, enough to go grave robbing and use him in her plan is a solid idea. Even the alliance with the Borg is interesting, going along with her aim - have Kirk conditioned enough to kill Picard. At this stage in TNG, they would want their one weakness - the knowledge he retained as Locutus, taken out. That's a novel way to tantalise the Kirk v Picard crowd, even if it's a showdown we're ultimately deprived of. I'd probably rework this to include the launch of the Enterprise E somehow, given it's set between TNG films - rather than the Defiant-class ship that's temporarily given the name toward the end. Plus the Borg homeworld being the machine planet V'Ger encountered is perhaps one element of fanwank too far. I'd continue to keep the Borg Queen out of this... as the book did. Written before First Contact reached the screen, she hadn't even been thought of and I preferred the Borg back before she was around anyway. With their assimilation of a key person as mouthpiece, a Romulan called Vox in this case.
The style of those two books lend themselves well to animation, not being at all challenging or cerebral - just action adventure. Ashes I remember looking impressive as panels, flowing one after another in a comic. The Kirk-centric plot is advantageous in the current climate, while involving the TNG crew and even a shout out to DS9 offers fans of other generations something for afters. Between the two adventures, it covers all the bases of having some audience familiarity. Dare I say even 15 years on.
Get an agreement from CBS to do those two stories and hope to get around to adapting Avenger. If the first doesn't meet with the kind of success they expect - ratings, DVD/Blu ray sales, downloads whatever - further rewrite The Return to rush Kirk back to full heath by the end, alive and well in the 24th Century. Then consider it job done - two animated movies that redeem Generations, by exorcising the death of Kirk so many (even those involved) regret.
At least the effort will make the wait between Abramsverse films more bearable, while adding something else to reinterest fans in the back catalogue of TOS/TNG already seen countless times over.