The ability to add sounds to a profile that is maxed out.
For example, they just go in a reserve space that isn't used. This would allow me to go through sounds that I'm not wholy sure I want on a profile, without constantly having to remove a sound and then add a sound. Monotonous to and fro is annoying. It would save time and then, instead of clearing out sounds I may like to replace, I can just quickly swap out with the reserve space sounds.