1) Aren't vchans simply duplicate channels? If so how/why doesn't mIRC support them fully?
4) And popups! $iif gets a little tiresome
5) I'd love to see similar behaviour for usermodes as chanmodes - that is, supporting a USERMODES= protocol (and a $usermodes identifier), for totally dynamic flags (then maybe IRCd developers can make umode +s a little tidier).
7) Subfolders would be handy too..
Just my two cents.
