All you wrote seems reasonable at some point, but isnt 3DGS enough to create a great game? I mean, the limitations I've encountered arent that great to send everyone to other game engines...
With an amazing modeller & animator, a 'moderate' coder can make almost 90% of the games that come out as indie or even AAA titles.
I can only think about a few examples that cant be copied quickly and almost bug-free with Acknex.

No, really, someone should do something to attract more newcommers and possibly some of the old guys back... Its pointless to throw so many years of experience and struggling both dev side and our side.