If you are intent on using brackets, you could make an identifier that appends the network to the end automatically.
alias winname return $replace($1- $chr(40) $+ $network $+ $chr(41),$chr(32),$chr(160))
And then throughout your code, replace the window names with something like this:
window $winname(@IRCd Info) blah blah** Don't include the ($network) part, as it is automatically added by the $winname identifier
-genius_at_work