- DCC complete support
- Logging
- Friends database, inserted in query window
- Help
- Aliases
- Nice eggdrops and W/X interfacing
- Script langage ? 
- IRCops commands support (/oper, /kill, etc)
- User +o/+O messages support (IRCops) 
- Flood protection ?
- Ban list display
- Channels list display
- Servers links display
- /ignore command
- More base commands (/op, /deop, /voice, etc)
- "Graphical" options, via icons or menubar
- Clicks in channel/query/userlist windows support
- Secondary "script" commands, as mass-oping, etc
- Multiple servers support ?
- IRC servers database (could even be remote...)
- URLs/emails grab 
- Quit confirmation
- Improved setup with more options, as colors choice
- Notify list : in status window ? 
- Way to show new messages in hidden windows  
- Sounds ?
- Userlist must be alphabetically sorted
- Autoclose idle query windows
- Memory optimization
- Channels, topics and bans creation date support
- Display improvement
...
