Hey geffen,
I don’t know if “marketing” is the right word (it has a negative connotation nowadays).
I’m convinced that people don’t read anymore and that you need to get people’s attention within a few seconds. Else, they go away. Remove as much text as possible, use graphics.
Convey the message from the user’s perspective and not from the product perspective. To elaborate on this: I think I know the basic principles of zero knowledge proofs, but my mum doesn’t and doesn’t need to. She needs to know it’s private and no one else but her, the sender and a potential chosen third party can see about the transaction. I love the Swiss account analogy, everyone can refer to this.
zcash is like your own Swiss bank account.
When we have people’s interest, they’ll dig more by themselves if the slope is not too steep.
When I visit some other project pages and try to understand what this particular blockchain project is about, only one thing comes to my mind: “WTF?!? didn’t get a thing out of this!”
Just trying to share what I see everyday 
I tried to follow this when I had that little comic strip made: