an i2p mixer is better, which is in the works. the main reason i say mixing doesn't work is because forensics can trace transactions. that's the point of what Sandia is doing right now, they're building a blockchain forensics tool, that will ultimately find origins of mixed coins, as well as locate users that werent on tor/i2p.
How is an i2p mixer better? What does it do and how does it work? Could you explain it to us?
Btw: Here a link to Sandia, beating Bitcoin bad guys:
http://www.sandia.gov/news/publications/labnews/articles/2016/19-08/bitcoin.html.
well, i2p/tor help prevent the main issue with mixing, which is, ip obfuscation. on blockchains, all ip addresses that are not on tor or i2p, are kept in logs (not the blockchain itself) so it's pretty simple to match timestamps with transactions. sandia is aiming (and will) have a way to follow transactions on blockchains, regardless of them being mixed, which will ultimately lead to the users ip addresses. i2p and tor prevent the users ip address from being on the network completely, which is much better for privacy. im not a fan of mixing, but im a huge fan of i2p, so adding mixing to it can only help in my opinion.