No. Ipv6 is Ipv4 with bigger addresses, it didn't try to solve any of the other problems of IPv4 (or attempts to solve them were killed by ISPs).

One example was multihoming (having more than one ISP) serveral smart proposals were floated (anycast, nearcast etc) but they were killed by ISP's who protected a lucrative business.

If Ipv6 had made multi-ISP multihoming possible without all the trouble of BGP, business would have killed to get it back in the late 1990ies.

Cookies only disappear from the wire, they are trivial to simulate on your server (see my other reply here).