NEW Solution to common hero complaint
I have heard many people complain about not having heroes in war. And yes, I agree that this is a nuisance. But supercell uses people who gem heroes for lots more money At least that is what I have heard.
One argument people use is that the builder is working on the altar, not the hero, so the hero should still be able to attack. Well how about this: since the builder is working on the altar, you have one more attack with your hero at full strength. Then after you use that attack, the hero is tired but has to sleep on the grass (poor little fella) so he/she doesn't get full energy. This means the hero loses stats.
The first time you use it, it has full strength. The second time, two thirds strength. The third time, it has one third strength. After that it gets insomnia or whatever and sleeps the rest of the time until the upgrade finishes.
Tell me what you think of this and what I should change.