I would like a more reasoned justification.
I often play 2v2 (this is my priority on GR before ranked games), but fun is more interesting, and most importantly, you can play.
There are some drawbacks here:
1. Jeb with a timer for battles - almost everyone will run out of time in the treasure, each battle is intense, i.e., only 1 battle per day in the treasure.
2. Jeb itself is terrible for 2v2; maybe you can look at Pete's map?
3. I would suggest a pure SOD, but let the organizers and those who will play decide. Set the time to 1 or 2 minutes; if it's more, it will be a torment and a waste of time, not enjoyment of the game.