matrix-doc/proposals/2175-remove-creator-field.md

MSC2175: Remove the creator field from m.room.create events

m.room.create events have a mandatory creator property giving the ID of the user who created the room. This field is redundant as it is always identical to the sender of the create event.

This MSC proposes that, in a future room version, this field should be removed and that the sender field be used instead.

Note that creator is mentioned in the auth rules. It can safely be replaced with a check against the sender instead.

creator is also mentioned as a key to be preserved during Event redaction. It should be removed from that list.