Edited my post before this one.
Yes I noticed you were smaller, is that a script or a sprite edit?
And well I am talking about that brown cliff top, the first one you have there. Do the cliffs have to be that brown only? Is what I am saying. Instead take away the brown in the middle, while leaving a brown kind of edge, that way any kind of flooring can be used.
The first one you have made on here, the brown tile one. To take away the middle brown part and only leave some kind of edging that way any kind of flooring can be used. Just like those world map cliffs you made, like that, how its empty in the middle. But, how a little bit of the brown edging or something should be left behind that way snow cliffs and grass and all that could be made easy. Would use grass on TileA and use the cliff edging on TileE while using the brown cliff walls to make tall cliffs, just like those brown examples you made, like that, but grass in the middle. Brown cliff edging to make cliffs to have different kind of floorings. But how it would be easier just to make those cliff edges instead of putting a new floor within it. More customaziable if just the edges.