After losing half of my building, I think it would make more sense to either given an option for, or automatically give the group owner full modding permissions on objects that are deeded to a group. Several of us were trying to work on a building, and after giving each other full mod permissions, we still couldn't edit each other's objects. After setting them to the group, we still couldn't edit each other's objects. Our last resort was to deed itto the group and hope that the group owner could edit the objects, unfortunately we didn't know that you had to change the permissions so the next owner could modify.
Shouldn't this just be a default for the group owner to have permissions if you're even willing to deed it to a group? And shouldn't the objects original owner have the right to take it back or at least copy it?
I think this might be a good idea to implement at least some additional options, or maybe better warnings, before someone loses everything they've worked on.