I'd like to see every option that has a port (for example, DCCserver) also have a second port in SSL mode, and possibly be able to disable the unsecure one.
I'd also like to have the option of using my Windows client certificates as authentication to the other side of the SSL link. I'm working on a patch to an SSL-enabled server (Unreal) to make it require client-certificate authentication, and it'd be nice to not have to test it with raw IRC strings, y'know?
(I would /definitely/ like to see SSL-enabled DCCs, not just sends but also chats. I'd like to see mutual authentication requested, but not necessarily required, between the two sides.)