Ok so I'm already involved in a several RPs, so I'm not sure I can play, but I am interested in helping.
So basically we're hunting monsters on a colony world? Great premice, good fun to be had. Sounds like Evolve, which I think looks awesome and I want to get it on Xbox One, fuck the haters. Anyway, there are a few things I am wondering about however, maybe raising these will help...
1. What manner of monsters are these and how many are there? At the moment I'm thinking along Evolve lines; we fight one big monster each. But it could also be more Alien style, with lots of little ones, so maybe just clarify.
2. What type of scifi is this? Are there sentient aliens that we can play as, and do they have their own Empires as well? How technologically advanced is society; have we invented AI, cybernetics, ray guns? What do we hunt with? I've always liked the idea of steampunk spacecolonies, which would fit the hunting nicely, kind of like Victorian British hunters in Africa and such. But yeah, maybe specify that.
3. How will the RP play out? At the moment I just imagine going from one place to another, killing each monster that's causing problems in a variety of locations. But that could get dull, espacially if no effort is made to make each encounter and location different.
4. Who controls the monsters? Probably just the GM would be good, but it might be fun to let each player create a monster and take turns at GMing. That gives a good variety, believe me I've tried similar things.
Probably enough to consider now. Hopefully more people help you out, it deserves some attention.