It is already very possible to trick a feedee and reverse roles, if you play it right!>Actually i never played with player WG OFF, since the player character was introduced.
Good point to have feeder gals even when there is no palyer WG.
Maybe there still could be a player character if you switch "Player WG OFF". So you create a player character as normal just without the gain - a "can eat what i want but do not gain" chartacter ;) Then you could play the feedes as normal and they will be surprised that only they gain. Maybe even gain just by looking at you eating.
This would be like a "Free Mode" where you do not have to worry about your own weight.
Difficulty levels where already announced! So this could be the "ultra easy" or "free mode".