instead of player level.
and cap it at a difference of +/- 2 stars max. This should encourage newer players to step into arena and resolve the problem of them getting matchmake against a team of 5*
This should also in some ways resolve the issue of newer players requesting for CBT wipe(even we know it ins't happening anyway). Because it seems like at the end of the day no matter how they put it Arena still play a very big part in their unhappiness.