Kaeru Gaman helped me with the harder parts of the logic, and comtois as well!

Screenshot is using my beta tileset for a 2D game I have in mind.
I am adding ISO/HEX functionality.
The current version only edits LAYER 0 but I have integrated 3D layering. This is slightly more difficult to visualize, but if you keep the layers straight it is more functional for the ISO/HEX layers strategy.

Download of beta available soon!