Masternodes sounds good for regular coins without Zerocoin Protocol future, this is what distinguishes Nobt from many other currencies. that the nobt have Zerocoin Protocol future.
What have to do Zerocoin Protocol with masternodes? Zerocoin is for privacy, masternodes are for security and stability. PIVX for exemple have both implemented.
Yes, Zerocoin is for privacy, but with masternodes option Nobt will loss this distinguish . any coin have implemented masternodes switched decentralized future to centralized coin.