I recently updated KA and while it was updating, I browsed thru a few reviews...
One review asked for a better way to collect buildings instead of tapping on each and every building.
I'm guessing they might not know about "Shaking to Collect" all un-raided buildings. It's not an obvious feature to new players, but it is very handy!
If you know any new players, please let them know about the "Shaking to Collect" feature.
Thanks!