Hmmm, interesting feature. I’ll admit it. But then again, there’s something about building a house/tower/city block by block, like in real life. Though, that’s not to say that you couldn’t have such a shortcut over a large amount of time.
Let’s say that your very first building, you have zero experience ingame. After you’ve been building several structures, you’ll have gained a sustainable amount of experience by claiming various buildings (by literally placing a flag on each building perhaps?). This way, you can gain access to some form of new skills, like the ability to build with shortcuts. Personally, I’m very much up for this sort of idea.