cmd on Nostr: yes, that is possible. you could create multiple sets of shares for your nsec, and ...

yes, that is possible. you could create multiple sets of shares for your nsec, and run them concurrently. generating a new set doesn't invalidate the old set (you have to dispose of shares properly).

the bifrost node will only cooperate with peers who have a pubkey in the same group as them

in the future, igloo will be able to run multiple shares/nodes, which means you can participate in multiple signing groups, even for the same nsec

I don't have a clear use-case for doing this, other than more graceful rotation between sets (phase out the old set after the new set is in place).