I dunno, I agree with some of that, disagree with others.
Here's the thing. The garage kit market is doing exactly what it's meant for, filling in the gaps and offering kits that the Majors just can't justify (sales numbers) to their money people.
Allow me to toss out a statement I've used in other places but holds just as true here. EVERYTHING is somebody's most favorite thing. Shuttles, Starships, Episodes, Series, Characters, on and on. EVERYTHING. But, just becomes SOMEBODY loves it doesn't mean ENOUGH love it to justify the cost of manufacturing. Sadly, we're past the age when a model company can crank out ANYTHING just to see if anyone buys it (ST Exploration Set? *pbbllrrrtth*).
I mean, I fully expect there's a subset of Trek fandom that thinks the Kazon were a pretty good idea.
So picture R2 saying "We're gonna make a Star Trek Shuttlecraft kit!" and THAT is the only thing said. I suspect many would assume they were going to make that new-tool Galileo they've been fiddling with, but there's a good number of people who would be angling for the larger shuttle from TNG, and then some would call for it to be the small Shuttlepod, and some vocal for the 'mostly not used' original Probert designed 'soapbar' shuttle (which I happen to really like), and THEN someone would just assume that they meant that 'big shuttle' known as a Runabout.
Naturally the truth would come out and they would be making that crappy* shuttle from ST 5.
I happen to think, for example, R2 COULD make money on a series of shuttle kits, (maybe 1/72, maybe 1/48, I would lean to 1/72 just so every possible thing can get made), I would group several in a box, maybe group them by series or movie, shoot for around $29.99 a set and watch them fly off the shelves.
But, once again, that takes the resources and more than anything else the WILL to make it happen. That's not happening any time soon.
It could happen if CBS expressed a desire for more model kits to get made. But again, they don't know what all to do with the franchise. There WERE people in place that did,Paula Block in publishing was one. They're gone.
*It's not THAT bad but it just looks so awkward, which sums up ST 5 pretty well