I'm going to try to do something like this as a way to learn a little bit about textures and photo editing. I would assume it would encompass things like:
- Getting current screen size
- dividing screen by grid block size
- dynamically creating required number of blocks
- displaying grid as lowest possible layer
- possibly allowing block size modification
As I said, the hard part for me will be actually getting a texture made right and put into the addon correctly. Most of the rest I shouldn't have as much problem on.
It's a project at least!