For me the issue is not that BR5 exists.
It’s that low and high BR gameplay is very different and I prefer the low BR one. But I can’t use some of the high BR gear I like, if I want to remain in low BR (cpt. obvious here). No amount of tweaks will solve that as it’s an issue embedded in the BR system.
It is theoretically possible to allow “high BR” gear in “low BR” games and keep it balanced, but that requires to burn to the ground a big part of the game and build it anew. And that’s simply not happening for multiple reasons.
Fair argument.
Personally if they got rid of BR V I’d through a party like it was VE Day 1945 and NYE 1999 at the same time…