Simply merging "email" with "ident" would be a good start.
Replace the email field with "ident". The ident field would now be server connection specific, so /server -i would set ident rather than email. Then remove the ident field from the identd tab (the identd tab would only control whether it was enabled and port). You could also just remove the identd tab and have an [Advanced...] button to the right of the new ident field in connect.
