Larian Studios Forums Divinity - Original Sin Divinity - Original Sin - General Questions about the toolset

Hello, I hope this is the right place to ask some questions about the toolset:

1. Will it be possible to change the rules of the game by adding or removing skills, spells, stats etc.?

2. Will it be possible to change the party layout of 2 heroes + 2 henchmen? Can mods have more than 4 characters total?

3. Will the toolset work under Linux natively?

Thanks!