I wish we can cancel a tower that we started before it completes. Some times we make a mistake or find a better tile to build it. We can lose partial stone/gold when we cancel it.
Agreed, Like when building upgrades are started just before a building event or forges started just before a meltdown event ! We would like to cancel them or that the event updates their time left accordingly. But in those cases, the cancel button already exists, it’s the one with gems on it !
A solution would be to ask politely an enemy alliance to come and burn it for you !
But if it was possible to cancel, I would like a partial refund, because we already lost time.