This is a great idea, and I have one suggestion: It can be kinda hard to see if two neighboring entities are the same in a given band (kbs, mbs, gbs), because

This is a great idea, and I have one suggestion: It can be kinda hard to see if two neighboring entities are the same in a given band (kbs, mbs, gbs), because you're looking for the absence of a difference of a pixel or two. Maybe if they are the same and neighboring, join the two columns rather than have them spaced? That would visually instantly tell you that those two samples are the same.