FAIR ARENA .... Not like 30 lvl players are playing with 60 levels ... it should be +5 up -5 down ...
The arena is a competitive feature, where you can measure your current combination of champions agents other players. Making it level locked may lead to players intentionally halting their progress to reap most rewards. Still, we are working on some changes in matchmaking, to mitigate power difference issues, on lower tiers.
Yes arena is competitive .... bronze lvl player is already aware that he is no match against g4 capable team - you do not need to show bronze player those for them to see (i am in g4 myself - ending up around 4k score)
mitigate power difference - unless you mean actual power calculated by synergies of team composition not this crappy 'team power' number you are showing now that tells you nothing.
my arena team is 139k power according to 'team power' number ... I have won against teams with 'team power' of 280-300k ... and lost to teams with power of 110k due to compositions and speed of opponent.
single scullcrown of 30-40k power in bronze 2-3 where whole team of 4 champions have roughly same power according to your calculations ...
now tell me who would you bet on winning in this scenario?
while it wont be perfect due to stupid power calculation - take average of champion power in a team against average of opponent team - not sum as you do now.
abusable by adding 3x lv1 to said scullcrown to fool someone inexperienced but in evenly leveled champions that would be better indication