Lego, instead of adding and deleting bans with the type 2 address, why not make a variable for $address($2,2) so you don't have to enter the exact address but the nickname to add and delete? Your script can be consolidated as such:

on @*:join:#:{
  if $readini(bans.ini,#,$wildsite) {
    ban -k # $nick 2 banned.
  }
}
on @$*:text:/^\$(add|del)?(bans?)|(kb)\b/iS:#:{
  if !%p {
    inc -u4 %p
    if $nick isop # { 
      var %type2 $address($2,2)
      if $regml(1) = add {
        writeini bans.ini # %type2 %type2
        notice $nick $regml Is banned from # $+ .
        mode # +b %type2
      }
      elseif $regml(1) = del {
        remini bans.ini # %type2
        notice $nick $2 Is unbanned from # $+ .
        mode # -b %type2
      }
      elseif $regml(1) = bans {
        notice $nick  $+ # Bans.
        var %c 0, %t $ini(bans.ini,#,0)
        while (%c < %t) {
          inc %c
          notice $nick $readini(bans.ini,#,$ini(bans.ini,#,%c))
        }
        notice $nick  $+ %c bans found.
      }
      else {
        writeini bans.ini # %type2 %type2
        ban -k # $2 2 kickbanned by $nick
      }
    }
    else { 
      notice $nick You lack access to # $+ . 
    }
  }
}