You're dreaming. I would love it, no more waiting for new troops unless I needed different troops for my next attack which would be rare.
SC is not going to do this.
You're right, these days most CCs are empty on defense. When I first started playing that was very rare. Mine sure as heck are not empty. I need a better way to know that my CC is sleeping. Twice I've used it and twice I forgot to wake it up before I logged off. cost me 3k dark one time. The other time no one attacked.

Sure makes life easier when there are no CC troops.