Actually another idea is I just realized it is a struggle to work with those big world tiles because you can't choose them at once like parts. So you need to manually move every one of them and change textures individually as well. So maybe add ability to choose them as well, both change of height (with a fix of the fact that if they are too far apart than you will be able to see missing texture because the tile is so high up) and textures. And the ctrl + shift like in Paint.net to choose individual parts as a group instead of just 1 crowd is also would be nice.