Sorry guys, went to bed after I posted this topic.
What are your specialties? 3D games or side-scrollers?
I feel more at home with 2D games, but I can develop 3D, it'll just take longer to model, rig, texture and animate.
make a coop centered game that creates randomly generated challenges where players have to work and gather resources in order to complete the challenge
This is really interesting, I immediately think of something like Wario Ware, which used to bring me lots of fun.
is your indie company named foxforgeter industries?
Caffeine Spider.
make it a rouge-like item collecting game where you have characters in armored core-esque shooting up mutants and alien monsters
Gives me a bit of a Borderlands vibe but rogue-like. Mmh, I'm thinking of a game where you have to hunt giant monsters to collect something from them, like their soul or something. Idk. This concept seems a bit harder to make however.
make a story driven game where you play as death
You mean Grim Fandango?