The sourcecode, if released, will probably be available to all. (I'm pretty sure, anyway).



The council is responsible to make the "main" version of JJ2, keeping everyone and everything compatible with each other. (If each person or different groups made they're own JJ2, they'd be incompatible and you wouldn't be able to play against one another).



If you want to make or suggest a change, just ask or something. If the source gets released, that is.