Fires, again, is a pain in the ass. That said, my main deck I’ve been using lately is esper control with yorion, and it actually does ok with Fires - Elspeth exile saga and Mortify do good work against it. I actually managed to exile/destroy four copies in one game, once. Felt good
Tbh, the only gripe I have with this BnR is that Winota didn’t get the chop, too. Even if she’s not cheating in Agent, she can still kill you with straight combat damage in turn 3 or 4, if she gets lucky (in historic.) Dat shit needs sorting out. (Also, there’s potentially a way for her to cheat out an Ulamog, but frankly if anyone ever pulls this off, I say they deserve it...)
As for companions, they needed a good kick in the ass. I’ll need to wait a bit and see how it plays out, but a 3 mana tax and making em wait a turn seems reasonable. Making it sorcery speed seems like the biggest issue, to me. I’d’ve preferred instant, but maybe that would’ve been too easy.
Ps - I made it to Plat 4 in constructed and silver 3 in limited. Satisfied with the former, less so with the latter. Me and Ikoria draft didn’t really get on particularly well