Dueling arena

I think it would be fun to play people live in this game. While I appreciate the predictable AI in PVP and PVE, it would be a fun challenge to go toe-to-toe with a real person. Here's my suggestion:

Create a new game mode that is an arena. The game matches you with someone very close to you in MMR who is in the queue. Normal in-game play for each player, except there's a timer on each player for 10 seconds per move (or some other reasonable time) before the AI would step in and make a move on your behalf. If someone misses five moves in a row you get an auto win.

I realize this kind of arena would make you chew through health packs, so make health packs irrelevant and allow players to always play with full-strength characters here. Rewards can be minimal to compensate for the health pack idea.

Let me know your thoughts. This could be a nice diversion when you're out of health packs or just want to try team comps out. Apologies if a similar idea has been suggested before.