The only unique ZCash feature - zero-sharing proof transactions of how it's called, consuming too much node resources to process. Hard to believe it will be used widely for that, for everything else there's monero, eth and btc.
We may fall into another 2-years low-profit mining hell.
I'm not so sure miners need yet another shiny new coin as much as they need adoption and use to increase for one or more of the ones we've got. ETH, ETC, ZEC, ZCL, have just about hit equilibrium. If the price of even one of those were to suddenly rise because it is actually adding value and not just speculative money being pumped in then miners will see another period of high profitability. On the downside the scene is starting to look flooded with miners and therefore may not be as profitable as before.