That is working but I'm also back to square one. Not a fast way to create large complex structures.
I have more issues, like no way to tell if the block is placed or not. In games (Minecraft, 7 Days to Die, Empyrion) the unplaced block appear as a semi transparent or we can call it a ghost block. Seeing what is behind before placement is very useful.
Camera movement also an issue for me in tight spaces. It is designed in mind to rotate and see an object from outside. Work for that purpose, but let say I build a structure with tight corridors and rooms and I wan to work from inside. It is very hard to move around and keep the camera inside. The type of first person camera movement like in the above mentioned games can solve this issue.
I think I quit on this point, and maybe check back some time. I do not want to look rude or a smart ass. I just used more fluid systems to create and hard to change.