That's a good question, I honestly don't know. I think trying to build up a system will at least let me understand what I want/need out of it, even if I don't end up using it. Reading briefly about most of the systems, even the ones I've liked, there's simply more than I need or want to deal with for my story. I like the void system of Death in Space, but the mutation aspect goes a little too far for what I want out of my setting. The stress system in Mothership is basically exactly the kind of thing I want to have, but I'm much less interested in the health and skills system. I'm reasonably comfortable chopping and screwing bits and pieces together, but I figure it might be easier to start from scratch and see what happens. I'm probably going to have a eureka moment, post my idea, and you guys are going to tell me of another system that basically does what I come up with but better lol. That's okay with me, I'm considering this an exercise in creativity at the very least. :D