I find it interesting the directions that popular works and I Ching scholarship are going: on one hand there is the market demand for a system of fortunetelling that is more positive and on the other hand that desire to unearth the real text behind that interpretation -- and notably the Chinese language has changed so much in that time that a literate Chinese reader is going to struggle with it.
The important thing for me is something that is easy to run but still has a good symbolic and mythic quality to it. I don't really know how to run tarot for instance and don't really want to learn.