War Participation decided by members

I've read a lot of issues with war conflicts in clans, and we had had minor issues as well, where some in the clan want to war and others do not or cannot. I believe a quick and easy solution is a switch a member can hit, that marks them as eligible for war or not. As this is already a program feature for those that left a war for a new clan and are ineligible for war until their current one ends, it should be an easy program addition to allow users to mark themselves ineligible if they cant be in a planned war.
This way those going on vacation or wishing to just farm instead can opt out without having to leave the clan and come back after war starts, or any of the other current methods of comprise. We for example announce when war will be started, and those that do not want to war leave, we start the war, and invite them back. It would be much better if that member could just hit a button to be spectator only and stay in the clan but avoid the war.
Thanks for reading ;)

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