I would say that, once the antennae are coated yellow at the top, that should be it done and finished...
Our daughter is very much into Stingray and Terrahawks (and also Fireball XL5).
I was also really impressed by the production quality of Supercar, when I watched a couple of episodes of that on the Supercolourisation Blu-ray a while back.
Thunderbirds did not make quite such a big hit last Christmas because that show plays it a bit more straight and the episodes are a good bit longer, making it better for slightly older children.
Star Fleet was received as a 'counterfeit Stingray' when I tried putting it on a long time ago.
I may try again this year, if I run a bit short of things to watch when we're not out-and-about, but I think it may have the same challenge as Thunderbirds.
If so, I'll give it a watch myself.
I started building up quite a good file of advice and admonishment quotes from Captain Carter and Dr Benn, which I planned on building into X-Bomber the Game's high-score screen.
It would be good to try and get that finished.
I'm trying to get to the end of The Deep, which is a very likeable, modern CGI Stingray/SeaQuest surrogate.
I want to see how the story ends on that.
I sometimes feel that the Star Fleet upscale leaves behind the fuzzy 'charm' that made Star Fleet give off a sense of 'otherness' when I watched it on VHS in the '90s.
I kinda feel like it made the show more mysterious: that it wasn't as easy to tell exactly what everything looked like in-detail, and that your imagination had to do a bit more work to try and fill in the blanks.
I think, in a strange way, that made the show more memorable to me many years later, when it came to starting to write the game.
That being said, the AI upscale is a massive step forward and the AI technology opens up huge possibilities for enjoying sci-fi shows, (which studios seem not to be able to make as good of a job of any longer) in completely new ways.
The AI is doing a lot of extrapolation and you can say that the improvement isn't "genuine" or "authentic" but the result is that you get to watch a fantastic-looking, rather than bleary, show.
I'm not sure that I really care that the detail is arbitrarily filled in by the AI logic.
I would very much welcome someone seeing how far they can push the envelope and doing a 1080p or 2160p AI upscale of Star Fleet.
But I know how much work went into the 720p release and it already looks excellent.