* The core group should be as "thin layer" as possible. Core group should operate mostly in the background. If the core group does a good job, they should be invisible.
* In the current legal structure (VZW) the board members carry the end-responsible. So the core group can only contains the same people that are appointed board-member during the general assembly. This way the people taking the decision must also take the responsible and vice-versa,
no people can take decision without needing to take responsibility for it.