I at first wanted to remove market, but we had a talk about it and want to give it at least one last try before turning it down. We feel like the coupons might bring a unique twist and are trying to balance that as much as we can.
Removing market would make sofree even more op, just saying.
And I, personally, am completely against straight out banning cards from war.
For the sideboard role, i'm not sure if i've talked about it with other WM's yet, but my idea was to keep it, with a -3 upgrades on it. If you want to use the sideboard role, you must use 3 less upgrades in your deck.