I wouldn't mind if this were to become a built-in feature, but I have a script atm that works (for me and me alone). However, I only use it for networks that do not have NickServ (well, because I can just ghost/recover there and be done with it) - so it becomes a simple
Code:
on *:UNOTIFY: {
  if ($nick == $mnick && ($network == QuakeNet || $network == EFNet)) {
    tnick $mnick
  }
}

(aside from the obvious "my $mnick is permanently on NOTIFY", and perhaps a few potential improvements to make it a little more sturdy...but again, it works for me™)