I would love Arenas back, even if it needs a balance pass on costs to account for gun and legend changes since. It's what got me started, and it's a better warm up for BR as noted than Bot Royale.
{edit}-- Changed my mind. They did the same to this that they did to the rest of the matchmaking. Considering it is 1 team v 1 team, the win/loss rate with decent matchmaking should be about 50/50. The fact that I got matched with brand new green players and destroyed 10 matches in a row proves they broke it.
I don't know what ADHD addled kids their EOMM based matchmaking is for, but it's not for me, that's for sure. I work for a living, the game don't repect my time, I don't respect it.
I'm done with anything EA makes. They killed Titanfall 3 anyway.