Hi everyone, we asked Rob Hinkle (Senior PvP Designer) to shed some more light on why this change was made. As many of you suspected, we implemented this change to reduce the frequency with which players abandon Warzone matches mid-fight. We found that Group Finder queues popping were a major cause of players leaving, and wanted to mitigate this negative impact on Warzones.
There is an easy solution to both problems. Allow us to keep our position in the queue while in a warzone. If it becomes our "turn" during a warzone then simply allow the next person to go.