This is pretty sleek, the base and the tower are well balanced, I like it. If I were you, I would take this design and add chiseled details like you did in the first tower (the chisel work is delicious, I'm loving the fall-apart effect, but the shape of the tower is actually a bit too straight) and just as you said make a mix of the two. I like to carve details with the chisel in some areas, but also add extra blocks on top and remove most of the material to get this sort of protruded effect, very 3-dimensional. Plus if there isn't, I would add a tiny roof to this