You are describing the game I always wanted. As far as asthetics of starship models go, I'm forever trapped in TMP era. While blueprints for TOS D7 weapon layout was appropriate compared to TOS blueprints of the Big E, the Enterprise was improved for TMP, while the K'Tinga ceased to make sense to me. Basing the game in the earlier era and making it fully modable would allow me to flesh out my own little fantasy fleets, as if I could rewrite the whole ST franchise.
Yeah, it's going into my own little world, but doesn't that sound like more fun than watching an Abram's film?
Then again, someone like Firesoul could simply mod that into another SFB based version. That would be extremely cool, as well.