..... a Star Wars and/or Star Trek Mod.
Thing is, could be done by people with different levels of artistic skill, so more likely for people to be involved in, else only very small number of people (aka 'handful') would be interested. But if people could do small bits themselves to add to the experience, with a server specifically for the mod?
So instead of Cruise servers, you would have Star Wars / Star Trek servers.
The easy bit for most people;
- Make car skins to look like futuristic vehicles, whether that be rocket designs all over everything, or futuristic adverts plastered everywhere.
Bit harder, but still likely lots of people could do;
- Change trackside adverts so they're more futuristic.
Need real skill to be able to do;
- Change daylight sky to night-time sky, with stars, planets, space-stations, moons, rockets, etc.
- (Somehow) change track textures to look futuristic (maybe sky texture could be roof of spacecraft and road changed to metal floor with rivets?).
- change wheel / tyre textures to look like some sort of rocket booster thingy.