Brawl Matchmaking
Brawl Matchmaking is very bad.
To have just one card in my deck determine that I will match up with the same 4 commanders 90% of the time, even without further argument, is proof that the matchmaking is tremendously flawed.
Yes, I understand that the commander is the most prevalent card in a brawl deck, but no card wins the game alone--and even if you argued that some do, to sentence a deck to what is effectively a soft ban is a gross over reaction to the problem. This probably compounds with other issues, such as how MTGA handles wins and loses, but if it'd track the recent success of a deck, or lack thereof, it could consider adjusting its position on the "viability scale."
I am sincerely okay with losing most of the time, especially with a new deck. But it is so incredibly mind numbing to only fight the same 5 or so decks, for days straight--only to find out that I've been condemned by a single card in my deck, despite all non-standard, and frankly suboptimal choices I've made with that deck.
Further proof of its flaws: One of my decks, which does not experience this filtering/rigging of matches, wipes the floor with most of the people it pairs against. The basis of the matchmaking is to match decks of equal strength against each other, but it doesn't accomplish that in either direction. MTGA doesn't know what a strong deck is--it only knows what a good commander is.
WotC cannot be held responsible for what good or bad decisions I make with my deck, but matchmaking is entirely in your hands, and it can be built with more competency than whatever weighing model is currently in effect.
It needs to change.