While your arena ranking is not an excuse for your matchup since you can be number 1 in arena with just 5 gold ans zetad characters... I understand the gripe.
Especially since before tw we were expected to inflate our garbage for extra GP in TB. If you joined a year later than I. You did not do that. So its a huge mismatch.
Only way I can see to fix it. Is pre select a roster in signup phase. Select 40 toons and then that GP gets matched up for GA.
The code is already in game (when select toons to deploy in TB there is a counter of GP).
Perhaps some of our more programming literate friends on the board can tell me how that wouldnt work (seriously if it wont id like to know so I can try and think of another solution)
Of course there would be a minimum toon GP selection like in TW... That way you wont have squads of lvl 1 toons fighting eachother... Or maybe thatd be fun too.