The one big thing about this to me is that

THEY ARE ALREADY DOING THIS without your ICO or token. I've looked through this for a bit and still don't understand exactly what it is you are trying to do here that isn't already being done.

https://z.cash/blog/project-alchemy.html

A direct Zcash to Ethereum bridge using BTCRelay rebuilt for Zcash (as Zcash is built on Bitcoin's code base this should be fairly easy)

Why don't you help work on Zcash or Ethereum or the Alchemy project instead? I just don't see the point of ZETH is that ZEC and ETH won't do themselves soon enough, which either means you are a scammer pushing BS to people, or you yourself are kind out out there.