My major issue with BTs is that once the season is over, you’re bringing an army who was balanced for the last GHB into something which needs to be balanced in a different manner (Hello Null Myriad nerf due to it being such an intensely wizard-focused season) and for some, that’s praying you get battle tactics that are reasonable for you (If Andtor vanished, I can guarantee you that the OBR winrate would probably drop by at least 5-7% unless Monstrous Infantry was the next theme).
I hope future GHBs spread BTs out so there’s some that aren’t locked to the GHB’s gimmick, even if they’re a bit harder.