OK if you're actually going to make it entirely baloo you should off yourself while your at it that map is literally and MGE competition with the added bonus that whichever teams medic hits more arrows wins.
Just because a bunch of retards decided not to play the og ulti map doesn't mean it's not worth playing (in fact if you play only one you should definitely play stock) and furthermore who is going to complain about map variety?
It is true that most of the other maps like the gullywash and badlands are aids to play (iirc the other custom ones are dick cheese as well because they're basically baloo clones with slight variations) but then you can limit it to those two good ones or let people choose...
edit: posted on mobile cause i got triggered without reading the rest of the thread looks like the decision has already been made so disregard this