Within those elseif statements there is no need for the | halt
If you do if ($banmask iswm $address($me,5)) you can have alot less lines.
The way you have them reversed you are essentially just doing an is equal to match.
The whole on ban event could be done as follows:

on 1:BAN:#:{
 if $banmask iswm $address($me,5) {
   if $me isop # { ban -k # $nick 2 Dont Ban Me, Banned! | mode # -b $banmask }
   else { set %nick2kick $nick | chanserv unban # $me | chanserv op # $me }
   }
}