Yes, we could create a nick with random chars, one less popular... so if our main nick is stolen we have to use a crappy nick in the mean time :P
OR.... my feature could be added
... Since you "or"ed me, i'm oring you back
Hehe it's almost like you're afraid to add anything new that may be useful to some people.
And yes, I am aware that it can be scripted in, as I already said, but that wasn't my point. Just other IRC clients have this feature, mIRC does not.
It is also possible that if you get disconnected twice, and you have 2 ghosts on IRC with your main nick and alt nick... then mirc will not reconnect, more alt-nicks would solve this too.