Arena Mode map concept

So my idea with Arena Mode is that there is no laning phase at all, and you just jump straight into the teamfights, and killing. It's not going to be small though (just to prevent abuse of AoE champs and items), it's going to be a big, fat ass, circle shaped map. Minions will spawn though, and there will be little bits of terrain here and there, but other than that, you just teamfight and get kills. Respawn timers should be cut in half, and the goal is to get more kills than the enemy.

Goal: Get more kills than the enemy by the 20:00 mark. After that, the winner will be determined. If scores are even, teams will go into a deathmatch, at which point each player only has 3 lives, and whosoever team has the last person standing, is the winner.

Shop: You cannot buy items away from base (as standard), but the Recall cast time will be as short as Dominion.

Homeguards will be removed.

Blind Pick and Draft Pick are the pick modes you can choose from.

What do you guys think?