Yeah, my original post details how I would integrate portions of the TOS cast with portions of the TNG characters (adapted to a post Voyage Home setting), with Shatner starring. Uhura and Chekov would get overdue exposure, Pulaski would be related to McCoy, he and Spock would just do guest appearances, and Geordi would take over engineering after a season with Doohan aging out. I would add on to what the movies were doing and keep the aesthetics and world building of TOS rather than flush it all and pretend it didn't exist for years. The show would have still launched in '87, after the last movie wrapped up the trilogy and reset the status quo with Captain Kirk and the Enterprise A. Maybe peace with the Klingons would finally come after the Borg invasion or something, but the political state of the galaxy at the end of IV would have produced a lot of good stuff for an ongoing show, and the stuff that Kirk has been through over the course of the movies, could provide lots of dramatic material to build on as the show progresses.
I’ve had similar thoughts in the past about how TNG could have been done better. The unfortunate truth is that it would not have happened the way you describe. Between Paramount wanting to continue making films with the TOS cast on the Enterprise-A, and Shatner & Nimoy being vehemently against a new tv show that did not focus on the TOS cast, the only way TNG could have happened was with a different crew on a different ship. The time period could have been better (as I mentioned previously, it could have take place only 20 years after TVH, not 70), but the TOS cast’s initial involvement would have been nonexistent (other than DeForest Kelley’s cameo.)
Now with that said, sure, we can have our fantasy world. In my fantasy TVH would have been the final film with the TOS cast. The Enterprise-A seen at the end of the film would have been a new ILM filming model of a new class of ship, and the production would segue into TNG, where the TOS cast would be phased out over the course of the first season and the new actors would take the center stage by season 2.