Replace "Administrator" with "Owner" of a room to make the consequence of co-ownership more obvious
Losing sovereignty on a room can happen since people tend to grant Administrator PL to others quite easily. It's seen as a technical role, but the "room governance" aspects are often overlooked by people who grant others administrators.
I looked up in the Matrix protocol specification, and it seems to only mention power levels but doesn't really give it name. It only suggests the following:
Clients may wish to assign names to particular power levels. A suggested mapping is as follows: - 0 User - 50 Moderator - 100 Admin
When talking of the "owner" of a room (instead of administrator), and "sharing ownership" (instead of granting admin privileges), people have a more intuitive understanding over the fact that they can't take it back.
For reference, I opened a similar issue on Element web: https://github.com/vector-im/element-web/issues/17634