Right now if you're in a partially formed group queued for content in Groupfinder and one member disconnected the group is paused in queue until the disconnected member has reconnected. How about being able to manually pause GF in case you have to go AFK, or in the case of a DPS running daily's and want to complete the the heroic mission. I'd rather pause GF go do the heroic, unpause and resume que than give up my spot in queue all together.
While paused, you wouldn't move up or down in que while paused. If you were 30th in line when you paused you would be 30th in line when you resumed.
This could also be tied in with AFK/force log out timers. Say if you are AFK(by the /AFK command or by inactivity) your GF position is paused as well. That way when GF finally does pop you aren't waiting for that DPS that alt-tabbed, or went AFK while queued and then you have to wait for the 2 minute timer to count down before that person is automatically opted out and you're put back into groupfinder.
Seems like most of the time I have groupfinder pop I'm waiting on a DPS (usually a mara) that isn't there to accept the invite. Having this functionality built-in could speed up wait times for those that are ready to go when they que up and end up having to wait hours for something to pop.