Strategy and cleverness are not important in arena, or rather, they amount for the absolute lowest % of what matters in it. That can break a tie between two reasonably close teams which is an extremely low % of all encounters.

Making reasonable changes to pvp would take less than an hour to start by giving lower power score players protection from higher score ones (not 100% of the time but simply tiered. In the first 60 seconds you can not be matched with a score different by over 10%, then you can go to 20% before 90, and finally you can match free for all).

I would also suggest and speculate the reason such an idea does not have more momentum is that the other players who want it we run off long ago because they got fed up with being beaten up at literally every turn trying to get them to spend more money. Over a million people tried the game to some extent, we certainly don't have that many playing now.