I know it would require a lot of work, which means it would never happen, but a thought just struck me. What if we had a system like the duelers club, where you que and it moves you to the area. But the area is a giant maze, no flying, one tries to escape the maze, while the other searches for them. Each one can uncover debuffs that slows/teleports the other. And make it use the “tag” mechanic from decor duels, so it won’t matter if you que as heals or dps. You will still be able to use all your class abilities, so you can either kill the target or tag if you have someone queuing as tank or heals. Or if you want to battle you could create an option where both sides have to agree to battle. Kind of like in arena where you can pull the lever to start the match immediately.
*Sorry for all the edits, keep re-reading and finding errors