- If the gaseous form of the thing is very potent, it makes sense if some of it has detonated naturally before humanity's arrival. If it's as powerful as you say, It'd be nice if we see some badly scarred planets resulting from a Bycorium deposit explosion.
- Where do the player nations start? Are we basing ourselves in a mothership or we get to reserve a planet (or part of it)? Are we new nations entering the sector, or have we established colonies in the system?
- Will this NRP involve dice-rolling? If so, how much?
- What benefits (aside from money) does a player get when he/she is in control of most Bycorium in the sector? Do we have access to Byrorium warheads? (It'd be both great and game-breaking if we can just drop 5000 hiroshima's worth of explosives at our enemies.)
- Also, since you used Hiroshima as a unit of measure, is Bycorium, by any chance, radioactive (and thus capable of being used to perform uncontrolled nuclear fission a.k.a be a nuke)?
Sorry if I'm coaxing you into hard SF territory, but more detail can't hurt.