I think even if you´ve got the engine, you have to design/draw/create your own animations or every person in the game.
So you´ll need a whole team for such a project-> have fun :P
Sorry, we haven't made a decision whether the engine will be open source or not. I can't imagine we'll release our code until the game is released. So please be patient.
sorry im a bit of a modding novice, would this enable to us to customise characters wthin the game, such as redisgning the character to look for example like oursleves, or would it add new characters?