I actually do kind of like the idea of a new IP for every connection...
I haven't had much time to look into it recently, so maybe the situation has changed, but I do recall seeing multiple issues with SLAAC and other privacy features (not just involving EUI-64) still leaving devices trackable in common situations, and even that's only where it's supported.
Hopefully there are workarounds and patches for the issues that have been identified so far, and I should probably take another hard look at the current state of things but the impression I got just a couple of years ago is that if IPv4 can be made to protect privacy it'd still be way too complicated for most end users where NAT pretty much just works, and works with most devices and gateways.
I haven't had much time to look into it recently, so maybe the situation has changed, but I do recall seeing multiple issues with SLAAC and other privacy features (not just involving EUI-64) still leaving devices trackable in common situations, and even that's only where it's supported.
Hopefully there are workarounds and patches for the issues that have been identified so far, and I should probably take another hard look at the current state of things but the impression I got just a couple of years ago is that if IPv4 can be made to protect privacy it'd still be way too complicated for most end users where NAT pretty much just works, and works with most devices and gateways.