The familiar -uN switch (used in variables, among other things) could be added to /enable and /disable. For example, the command:
///enable -u3 #blah
would be the same as:
//enable #blah | .timer 1 3 disable #blah
The .unset property should also be added to $group() and would function like in $hget().unset ($var().unset would also be a great idea btw).