No Brawl as an eternal format sheds a lot of what makes commander unfun and/or removes a huge monetary barrier to compete.
My playgroup has tried a lot of things recently to curtail our out of control power level and it has helped but we've explored further options like building budget decks. The problem is you don't often get together 4 people that all follow the same house banlist or have all built budget decks, which makes for quite the power imbalance.
Making Brawl an eternal format doesn't solve any of those problems, it just moves them to different cards. Any casual format will struggle with figuring out how powerful a deck should be. You try and do "casual standard" and you'll run into the same issue.