Personal IPv6 exit IP as alternative to port forwarding

[CentralPivot 1]

With IPv6 allowing practically infinite IPs it should be possible to assign a dedicated IPv6 address to each connection, allowing incoming connections to any port to be forwarded. This would be a great way to circumvent the port forwarding restrictions on IPv4 that exist because multiple clients have to share the same exit IP, and I think would make for a nice optional feature.

[Tech Jedi Alex 1513]

But then, why even use a VPN for privacy reasons? IPv6 was specifically configured to be NATed to have a similar pseudonymic way of operation as with IPv4.
Also, this would mean that port forwarding will only work with v6, but half the ISPs in the world don't even rollout v6, and most VPN users simply disable v6 upon connecting. There'd be backlash with such a decision.