I don't think Evan wants to change Dash in any of those ways.  We like that you can clearly audit the blockchain, but with mixing, you can't follow where the coins came from.

What will happen is coins will go through mixing in the 3rd tier network, the Evolution version, and instantly be mixed through a quorum.  I believe it'll be equal to 10 rounds, and the ip address of the user will not be distinguishable to the first MN in the quorum, because the user is sent to the quorum from an entry point, which obfuscates that information.  And that entry point has no way of knowing what is being sent back to whom.

So in the end, mixing will simply be instant, and better than ever, but look exactly the same as it does now.