I've mentionned some of these before, might have gotten lost in the shuffle...
- Custom shortcut keys for Quick Texts
- Option to block groups from the contact list (ie right click and choose "block group")
- Maybe combine the Boss Protection and Instant lock into one options, with selectable features (require password, optional icon, etc.)
- Custom (RGB) colour dialog for fonts (for the basic MSN IM colour, visible to non-Plus users)
- Ability to suppress sounds for individual chat windows
- Option to choose a default font formatting to override selected settings (ie: instead of having bold, blue Arial Bold, just type /noform or something and it will be regular, black Courrier New)
I could throw in a few suggestions for the contact manager, but if you're improving it, I'll leave it alone!