The idea of having different power levels for ships could have worked well. Basically, if you're going to do stupid space opera, then ripping off FTL: Faster Than Light with third person piloting would work wonderfully. Literally copy all of the mechanics, or tweak them a bit.
If we're going to have a globohomo future, I'd also like to see Kalergi's bronze Egyptian-looking mixed people, not abbos. But we know it's not really even about mixing like the utopians used to think, if everybody's mixed there's no one to scapegoat for everything anymore.
I think it'd be cool if future speech, instead of sounding like Sarcastic Californian Faggot, went backwards to being lofty and eloquent like Victorians or a Shakespeare play.
Edit: In fact, though this would be different from NASApunk, I have thought before about if future aesthetics went back towards being overly decorated. "Baroque futurism," might call it. Lots of frills and bits and bobs on clothes and furniture. Warhammer 40K, just because it's edgelord pseudo-medieval shit, has its cathedral ships, and they're awesome.
But even in a more restrained way, we some settings use crazy fashion industry like clothing as its way to make it feel futuristic. Having it just be modern day but gayer is really lame. Or there's the example of Prey, which is art deco in space and is awesome.
It's disappointing to see that this "NASApunk" game, despite having no aliens, is still the softest sci-fi schlock available. I mean, Elite is pretty grounded (boring) and even it has space whales to kill.