Commando is not as good or balanced as a BR right now. So why does one team (not BR starts) got a BR spawn and the other a commando?
I believe that this is a really strong disadvantage at the beginning of the games.
Please note that I am talking on asymmetrical maps (live fire, recharge). I think both teams should have the same weapon spawns at base like in bazaar or aquarium.
You pretty much answered your own question : it’s cos they’re asymmetrical. There’s a reason why you don’t have CTF or “base” related games on those maps. And since anyone can spawn anywhere after the initial spawn, it really doesn’t matter if the spawns are asymmetrical.
This isn’t anything new either, even in older Halo games. Take Last Resort for example. The only reflected spawns for both “sides” are Sniper and Shotgun, but everything else is asymmetrical spawn. One side has Bruteshot, the other has SMGs for some reason. One side has all the vehicles, the other has a Spartan Laser.