See TGreer’s reply to this comment: Bitwarden Roadmap - #125 by Rayman
It seems our desire is somewhat a duplicate of this: Nested vaults to implement multiple security levels
So bitwarden is aware of it, but not scheduled for work.
Yours is an understandable work arounds, particularly with your security desires. I think I find multiple providers impractical because I’d rather not have the overhead of manually syncing between them.
I think I’m likely to use the organisation option in preparation for the profiles functionality coming up later in Q3/4