HCL Domino Ideas Portal
Welcome to the #dominoforever Product Ideas Forum! The place where you can submit product ideas and enhancement request. We encourage you to participate by voting on, commenting on, and creating new ideas. All new ideas will be evaluated by HCL Product Management & Engineering teams, and the next steps will be communicated. While not all submitted ideas will be executed upon, community feedback will play a key role in influencing which ideas are and when they will be implemented.
For more information and upcoming events around #dominoforever, please visit our Destination Domino Page
Assuming that this mail NSF is a personal mailbox (not a mail-in db or shared mailbox), signature is kept as a profile document is the NSF so there should not be any need to be "another person" in your personal mailbox.
For mail-in db, IMHO signature should represent the team / project, not you personally, so again I do not see the need for a different signature.
Maybe you have a different use case ? Have you look at third party solution like Crossware ?