This is a clever puzzle mechanic. I feel like I struggled trying to finish the two missions (didn't really attempt the third), but it made me feel clever when I did finally figure them out. Well done on this.
It took me a while to find the camera rotation buttons, and once I did, I didn't really use them because it made the controls too confusing for me. If the WASD directions updated with the different cameras, it would have been much more useful.
Oh, and a bug I found: After connecting the block in the second room of the second level on the high ledge just in front of the door, you can press D again and get stuck in the wall.