The value of Bitcoin Cash is easy to see. You need to look at it from a FIAT perspective and not from a crypto currency perspective. The word "cash" was probably chosen because it invokes a sense of tangibility in the minds of people who are on the fence about bitcoin. Which would be a smart strategy. It looks to me the plan is to entice more people from FIAT into Bitcoin by creating a currency that exists in between the two. A bridge so to speak for ordinary people to cross. Bitcoin cash will end up being used in brick and mortar stores, via point of sale systems. They needed to do something to compete with Apple Pay, etc. Again, well played.