Again the biggest complaint about BD from most people I spoke to was the increased damage. Amy, Talim, and Raph do less dmg overall but have some hard-hitting combos still. Wall combos can be pretty amazing. Yun has the most powerful one I found way back at 184 damage. That kind of damage is way too high for Calibur imo and I don't think anyone should be able to do that. On a basic level BD is a step in the right direction: refined SG system, hitbox/whiff fixes, nerfed bubble juggles, better step, etc.
I'm biased because my mains are overall better in BD but I expect good things for SC5, especially if we're (8WR) involved in its development.