I would like to see the ability to set global variables like the way you can set local variables.
E.g.
//set %network $network, %nick $nick, %chan $chan
Rather than doing:
set %network $network
set %nick $nick
set %chan $chan
Or, failing that, an option to make /var set global variables.
//var -g %network $network, %nick $nick, %chan $chan