The game mechanics part are great for the most part, barring the few bugs which you already know about. The editor part will need some work if you're planning on charging for it. In my opinion it needs a cleaner and more intuitive interface. A drag and drop would be really good. As an example, instead of having all the different buttons, you could do something like have a scrollable area at the bottom (or side) of the screen with all the different parts which can be added in it. If you click on or touch a part it cycles through the possible colors. A styled slidebar just under or beside the part could size it up and down etc. Once the part is ready you just drag it where you want. Even better, make it so that the parts can be edited even after being placed. Make it so you can touch/click directly on the wall, floor, cabinet etc to cycle through those options. Basically just clean up the look of the editor and make it a bit easier to use. I hope that makes sense. Sometimes I have trouble putting what's in my head into words which others can understand well.