Although I like the idea, this is a valid argument against there being a need for it. It is definitely true that they have am[ple chance and they should. And also its true that the leader if he is aware or has a desire can do it himself as he is starting the next war. So with those workarounds available this by itself is nothing more than a 'nice to have'.
But the reason I am supporting it is because if they added this ability it has things better positioned to go the next step to add in whats being proposed in the constant war mode idea WarrenJames has had here for a while. And important factor to his idea is the can has to have everything all set properly in the settings for the next war as the previous war draws to an end so if the leader has the ability to make the adjustments himself he can be sure the next war is who he wants in it.
Edit...
Here is the link to the suggestion I speak of...
http://forum.supercell.net/showthrea...-Automatically
This is really cool, the one drawback is that there will be no down time between wars for the leader to make adjustments so the leader has to have gotten everything in place for a given war while the previous one was still in progress.
Also - In my clan we have someone that had an accident and will not be on for a while yet. we are not looking to kick him for that nor would I want to bother him or his family with a detail like this. So I just quietly opt him out myself as I start each war. I would love to be able to just throw the switch myself and let him sit there until he is well enough to rejoin us again.

