I’m not comparing BB and OW but I noticed that Overwatch has a possibility to have settings specific to different characters, some even had settings that were only for that character (Hero settings)
Shown in this video:
I think a lot of MMO’s also do this - you can even have keybindings specific to only that one character. One could run with shift, the other one with Q without having to change settings every time you change characters.
I’ve seen a lot of people for example prefer Instant Cast on some characters and the Standard one on others. Some I’ve seen say that they would like specific abilities have different cast methods, too.
So I feel this would be an appreciated addition ( though not necessary the highest on the priorities list )