The way you set up your buildings has no effect on how you play. So why not give us the ability to re-arrange them? I, and probably most others, like to keep a symmetrical building pattern but sometimes I chose a different type of building. So instead of have to remove a building and waste gold we could switch it with another building that's been built already. This is not suggesting a storage ability, if you want to rearrange you have to place all buildings down before exiting...
I do like me some organised buildings. My building are all in a pattern. I just adapted my building placement when I was upgrading building tiers.
Thats why you usually want to plan in advance (got my LL BC with symmetry, halfway HLLC there its symmetrical to 13lands) just plan ahead.