Why would you want to remove a key on the management server? Why have all keys copied to all servers? You say ssh-copy-id doesn't suite what you want, but you

Why would you want to remove a key on the management server? Why have all keys copied to all servers? You say ssh-copy-id doesn't suite what you want, but you could easily create a much shorter script that just loops over the list of server and runs ssh-copy-id.