To be honest the answer seems simple. Get _EVERYONE_ on VPNs, regardless. Even if you don't really use it for much, make it connect automatically via some browser plugin and send some trash random data.

As a "data scientist" the most painful thing I have to deal with is data cleaning and data quality. Add to that the difficulty of actually getting into a (hopefully broad) array of VPN providers and tracking every person yelling into the pipe will make their (FBI/NSA) lives very very difficult, and this makes me happy on a rather visceral level.