If I had all the time in the world, that sounds like a ton of fun, but alas I'll likely stick to space for now. I made Space Ark because I didn't feel like any existing space capital ship games were giving me what I wanted. For mechs, Battletech (Classic and Alpha) are both fantastic rulesets. For Naval, I love Victory at Sea...so no real gap to fill there! That said, the "monster" angle sounds pretty interesting... maybe a supplement of large, living "ships" is possible. Something to think about!