Re: "What's wrong with a /64 prefix?"
I'm not suggesting that ISPs shouldn't be offering /56 allocations, my issue is with the implication that getting a /64 is somehow problematic compared to the status quo of IPv4 that exists for most users.
Anything you can do on a domestic ISP connection with a single IPv4 address you can do with an IPv6 /64 allocation, and the latter case is, in my opinion, vastly superior than the former.
