Personally, I am quite satisfied with mIRC 6.0x. I know it has bugs, but they don't bother me at all. I don't care about adding new identifiers to the scripting language, or minor tweaks of the UI. Sure, I'll download that megabyte when the e-mail arrives, but only by force of habit.
I want major, significant evolution of mIRC as much as I understand that Khaled is unlikely to achieve that.