Don't panic, this isn't yet another GUI update suggestion, but rather a suggestion make mIRC's behaviour more modern.
- Make the move from INI/registry to XML. Since XML files allow multiple layers whereas ini files don't, the settings file could be made to make a lot more sense. And people wouldn't need to download something like mirc.ini unleashed (for example), to decipher what's in it.
- Add an option to the installer to install a version that uses a more XP/vista-ish icon.
- Add an auto updater. Something to check for updates and report them would be enough, but to actually download and run new installers would be brilliant.
- Add an option to make mIRC start when windows does.
- Make .mrc files open in mIRC when double clicked. If already loaded, open script editor and select script, otherwise load it and do the same.