In order to create new participatory spaces that make a restricted use of already existing features it would be nice to have fine grained control over what can the user make and what can't.

Currently seems that only exists two permissions: can :read, Feature and can :manage, Feature. The ideal scenario would be one where a new participatory space could be able to define that it uses a reduced set of features (not all) and define, for each user what can do with this features.