preview structures from structure blocks before loading

Currently, structure blocks only allow you to view the raw dimensions of the structure before you load it. I cannot tell you how many times I've loaded a structure and it was either backwards or just simply not where I wanted it to be. A simple fix would be allowing structure blocks to show a translucent hologram that doesn't overwrite any other blocks so that you can get your placement just right. This is probably the #1 Quality of Life feature I want the most, as I use structure blocks all the time to import builds in-between my creative worlds.