Co's should be able to donate as spectators!

As a co-leader in a clan, I have to suffer looking at empty war castles because other clan members in war, as well as other co-leaders who are also in war, don't seem to bother filling them up and waiting till the very last hour of preparation just prompts me to lose my patience. My presence, in terms of looking through my clan's war castles to see if they're full or not should be worth my time.

Please, SC! At least make it so that we co's can donate as war specs! What's the reason not to?!