I very nearly always use custom tile sets.
I do not like the vines and leaves of Ashenvale. They suck... in my opinion.
So I remove those and I replace with other tiles:
One such "texture scheme" would be from top to bottom would be left to right in the tool bar):
Ashenvale Dirt
Sunken Ruins Rough dirt (Looks like cobblestones, makes nice build able paths/roads)
Ashenvale Rock (nice white rock for the natural settings)
Village Cobbles (for unbuildable pathing inside of villages, towns, farms blah)
Dalarian Ruins Marble - a nice grey "stone" which if used properly can be either dark natural stone, or a nice paving inside of towns)
Ashenvale Grass
Ashenvale Lumpy Grass
AshenVale Grassy Dirt
Sunken Ruins Sand.
Now the reason why I have them in the order that I do is because I can use say Grassy dirt as a base, then go in with individual tiles of Grass and lumpy grass - what happens is that the grassy dirt lays on top of those two, causing the edges of grass and lumpy grass to be blended into grassy dirt.
Further grass and lumpy grass can be used at the top of a "cliff" edge where you raise the land into a hill and 'cut' into the side with plateau - texture the steep side with rock, using the grass at the top and the grassy dirt at the bottom you get a better illusion of steepness - grass over hanging the stone, the stone being blended into grass at the bottom.
Also tile sets have an impact on the water. I like the color of Ashenvale water.
Nearly every "natural" landscape I do has a village or a collection of houses/stores/blah so the road like rough dirt of sunken ruins usually works very well in the tileset and is better than the cobble stone or other brick like tiles in other sets. Its more "earthy" and feels like a rural road composition instead of the cobble stones which feel more like a town or a city of the era.
Also the rough dirt can be built upon - making nice foundations for unit buildings.
