ZPIV Staking a First for Crypto - Due in Q1 2018Users will be able to stake zPIV just like normal PIV, but also earn higher rewards and maximize privacy and ease of use. With the proposed new block reward system, zPIV staking block reward will be 50% larger than PIV staking rewards. Although PIVX already has orders of magnitude higher anonymity set sizes than most privacy coins, and maturation time to prevent timing attacks, zPIV staking will further optimize privacy by ensuring zPIV minting and spending occur more frequently.

with snippet youtube video from latest @snappy interview
https://www.youtube.com/watch?v=rwR90uJTcMsKeep it Purple People!
it should be a reason for ZDEX, the reason is ZPIV staking.
what if all PIVX staker switch to ZPIV, how will be possible to make a block in pivx?