Following few preserve edges and there seems to be interesting interaction between the top and bottom- a topological interplay.
Following are more like the earlier one except that the top layer/surface has gone missing.
I find these interesting (the following pink ones). Because edges are preserved while there are chunks that are absent at the heart of it.
I find this side of the model interesting but not the other sides. Wish I had gotten similar slopes on other sides too.
This is a variation of the earlier one.