* Still solve the confidentiality problem
* Be realistically economical: Everyone gets paid
* Earn a profit (not a sin and a good way to make the project sustainable)
* Have a technical and practical means of widespread adoption (e.g., personal contact with one website at a time isn't practical).
Social change, such as user confidentiality on the Internet, comes when someone finds a practical way to get it done, not when we all complain about it. Naysayers on the sidelines who simply don't like change and find fault for sport are, as reformers have long pointed out, the biggest obstacles.
Kudos to Brave for tackling this tough and very important issue. They just might change the world.