Please allow for building tiles to be upgraded (or downgraded) in Build Mode, to any tiles that are similar in function (ie replacing a Crude Wall with a Tudor Wall, or Desert Doorway to Bhutan Doorway). This should also result in previous materials being refunded during the upgrade itself.
I was going to post the same thing! This would be a huge QOL upgrade when building!
Absolutely, it would make it far easier, especially when deconstructing things can sometimes destroy other placeables, which is a pain when you are trying to keep things as aesthetic as possible.