This idea probably reflects my laziness, but here it is anyway: By doubletapping a building in your 'kingdom' you can then click on other buildings. And upgrade or delete them together.
No way lol. that's like accidentally selecting pots when attacking. could you imagine accidentally upgrading 3 buildings or more?
Let's be honest here you won't get much use from this anyway after your initial building on the lowlands with cheap buildings. The only thing this would also be used for is a quicker way for people to accidentally tear down their entire build and then complain to the devs. No support
In my defence guys, i hust had had to build and then upgrade about 25 buildings, so the idea sounded awesome to me at the time
This function would have been useful when you are building/upgrading on lowlands. But things get more expensive in the highlands and higher up, and therefore you will not have enough hold to upgrade multiple buildings at the same time. It would have been a good idea if more buildings could be upgraded at the same time (in higher tiers too). I understand why you thought it would be useful when you had to upgrade 25 buildings, though