We would need to be able to create groups, with a pack of predefined private features assigned to them: a file gallery, a forum, a wiki page, an image gallery, etc. The same for the permissions to the whole group-specific features.
Imagine when you have to create 20 groups individually, also create individually each feature for each of them, and finally assign individual permissions top each feature to each group... It could be improved at group creation time, I think. Xavi
Tiki Workspaces will offer this.