DJ, rather than checking if ($nick isop $chan) in every if line, just do one at the top.

on *:text:*:#:{
  if ($nick isop $chan) {
    if ($1 == !topic) {
      topic $chan $2-
    }
    if ($1 == !op) {
      mode $chan +o $2-
    }
    ;etc.
  }
}

and in the !-m line, you have { instead of (

You should also check if ($me isop $chan) or on @*

Edit: you have on :text::****:{, if someone used these in a pm, $chan would be $null. So just use # instead of .

Oh and you have { instead of ( in the !kick line too.