Clan castle donation option.

I know the clan castle troops for war has been brought up many times and supercell I think said they were open to the idea but struggle with how to implement it with ought adding more buttons to the clan castle.

I was thinkin about this and I think I have a pretty good idea... How about when you click request, at the bottom under where you ask for what you need next to request and cancel, put check box that says for war next to it. If you need the troops for war you just check that before hitting request and no one who attacks will pull the clan castle. Since this is primarily used for war and to keep cc primarily like it used to be, if you check for war, then you can only use that clan castle in a war attack as well... You can't use the function to lock the clan castle so you can go raid.

Thoughts?