A great addition to make building more free and smooth is to allow windows and doors to be placed between walls, if you have two walls over eachother you can put the door or window between them when you use the free move mode on them, also with walls next to eachother, here are some scenarios where you could use this: If you want a custom inbetween floor you could now ppace a door there, if you want two walls having diffrent color or materials you could now place a door there, if you want bigger windows that are on two walls above eachother you could place it, i hope im explaining this right, its a small change but it would alow so much more creativity and i see it as a great feature, thanks for reviewing my sugestion!