Possible Solution for "Use Heroes in war" problem
I do agree that the idea isn't bad, but the problem is that a few people are gemming their heroes to use them in war ==> profit lost for SC. For free is therefore a not so good idea and won't be added.
Here a idea how to solve this problems:
You will be able to pause the Hero Update, but not for free!!!
For 15/16/17/19/21/24/27/30 Gems (each time the ability levels, the cost
increases),you may pause the progress for Queen or King. The Hero is
then availible, and you may use him whatever you want for. But the
Upgrade Time does not simply pause, it INCREASES. Per hour, where the
hero isn't sleeping, the time will increase (never longer than the
orginal time) for another hour (or 30 min), giving a penalty for people,
who doesn't resume the progress after a few minutes. This still makes
gemming interesting, but more Clashers, who don't have enough gems to
instantly finish the Upgrade will use this way. Also you can't resume
while your hero is injured, so players will boost the heroes, which
results in even more money for SC. A war would cost 30-60 Gems + that
the hero will finish later (2-5 hours, when you attack twice in a row).However,
SC will have to disable the possibility to cancel the hero upgrades,
because otherwise you may store up to 100.000 Dark Elexier in a place
where it cannot be stolen.I hope you like my idea.