We need something now that we are sure works and can't be cracked.
We only have a 12 - 18 months to make such an altcoin fly before the global economy starts collapsing.
Highly experimental cryptography is very risky as we won't get another chance for this one year window.
We need fast transaction verification so we can support micropayments. ZeroCash likely can't scale to that without centralization, because verification is so slow at 115 transactions per second per i7 core.
And we risk that master key issue as well.
I think they should continue to refine their
research. But IMO that won't help us for now.
They are rushing something that isn't ready. They haven't even dealt with all the other aspects that need to be addressed such as limiting pool sizes, controlling orphan rate to get transaction speed down to under a minute or less, obfuscating your IP address connection to the network, cpu-only coin, etc..
There is a lot more to achieving the perfect altcoin than just sexy block chain anonymity.
I can't help ZeroCash, because I don't think their design is correct way to go. I think there is better technology which is incompatible with theirs.
As amazing as it is to hide the payer, payee, and amount and make the entire block chain a complete fog, it costs us that there is a master key and we can't even know if the master key has been compromised because the entire block chain is a fog.
There is a way instead to hide the payer and payee but not the amount and there is no master key. IMO this is a superior technology and it is much simpler.
I also believe this technology can use quantum computing resistant public key cryptography, whereas
it appears that ZeroCash can't.