We can travel these roads, but we should tread lightly. In the privacy game, let Zcash and Monero run out ahead. After seeing what false steps they make (and I’m confident there will be at least one), we will then be able to step much more artfully in those pro-privacy directions.
However, my advice is not to frame Ethereum as “privacy technology”, but as “transparency technology”. And then only afterwards start nudging toward privacy technology.