Okay, so I was thinking the other day that some of my favorite battles in the game are the ones that have intractable items on the board (cannons, gongs, etc), I would love to see some of these items incorporated into the PvP arena.
Perhaps right after companion selection there would be the option for players to place one intractable item somewhere on the board that could be use by their team.
I just think they would make an awesome addition to the current PvP arena.