A new feature that allows a player to editor/create a map with his friend.
For example :
There are 2 players, Player A and Player B.
Player A creates a map, in the map editor, Player A can send invite to Player B(his friend) to come and edit with him.
Before editing, Player A must give permission on what Player B can edit on. (For example : Logic[Triggers], Walls, Etc.)
Player B can ONLY save as backup file that will disappear after 7days(To prevent copyright of maps), Player A needs to approve the backup file in order to officially save it on the main file. (Sorry for the bad explanation.)
If Player A finds Player B trolling, Player A can deny permission to Player B for editing the map.
If Player A kicks Player B from editing the map, Player B will not be under contribution list and ALL the work done by Player B will be gone. ( So that Player A can prevent saying that "I made this on my own!" . )
If Player A is offline and Player B wants to edit, Player B can edit the map, but can only save as backup file until approved by Player A.
When done editing, the map will be saved in Player A account and only Player A can publish it. When publish, the map will state that the creator will be by Player A and contributor by Player B.
Once published, Player B can still edit the map and save it as backup file without removing the publish flag. Approve flag will only be removed upon Re-publishing it by Player A.
When the map gets rating, the developer point obtained will be equally shared among player A and B.
[^^^Hence even if Player B did 1% of the work, both players will still get 50% of the developer points. But again, kicking option is there if Player A feels that it is quite unfair.]
When the map is published, Player A can kick Player B from editing the map BUT the publish/approve flag will be gone along with the work done by Player B. (And Player B won't show up in the contributing list.)
[^^^ This is like the one that I mentioned earlier. ]
On Player B account, below the list of map he created, there will be a list of map he contributed to.
Both Player A and B can report each other for copyright done.
This is just my idea of having a multiplayer editor, tell me what you guys think.