The fact that MSV borrows both BM abilities as well as some old SV-themed elements in general is not a necessity. It’s just a choice from the devs in terms of design.
They can easily steer it in another direction. The Legion-version of MSV actually managed to, a lot more than current MSV.
Having said that, some overlaps, at least when talking general themes and elements of design, is not a bad thing. It’s all part of the same class after all.
“without shorting out the state of the current” BTW?
Sorry, not a native English speaker so would love it if you could expand on that a little.