There are numerous alt coins exist which advocates anonymity. For example, Verge, Monero. But the fact is Ethereum is based on smart contracts and have great real world applications as of now, I guess the implementation of zk SNARK's will definitely give a boost to ETHEREUM current price. Although, anonymity is always a requirement people demands in Cryptocurrency. Now, with Ethereum, it'll also be possible.
let's see the its effects on current price of ETH.