I'd rather you fix the AU scan issue so that Unify will actually work on macPOS before you go with M1. Why go M1 when AU doesn't work.
WARNING TO MAC USERS: AU scanning may not work in Unify so if you plan to use AU, at the moment it may not scan all your AUs. the only work-around I know of is using the VST/3's if you have it. On my system, the AU scanner will crash at some point in the scan. I've tried removing offending AUs as they crash but it crashes so often it was not possible. All my AUs scan fine with other apps that scan such as Logic, Reaper, Fidelia, Vox, SoundSource and others.