At one time I started working on a Star Trek RPG homebrew using the BASE12 system. I’ll probably not do anything else with it because I’m much more interested in creating my own worlds than I am in repurposing other people’s. But if you need a starting point for a Star Trek home game, here’s a Race/Class/Skills handbook and character sheet that you can use. This is literally everything I have, so you’ll have to get creative to fill in the gaps. Enjoy!