Nonetheless they want to multihome, and they want to _really_ multihome, being that anycast instances are usually scattered all over the globe. This implies that there must be a way to get a (however big) routable block that's unlikely to be filtered - well, the proposal has it all.
Why not learn from the lessons of radio spectrum? A fixed number of 3G frequency allocations were put up for auction (or beauty contest). Why should RIPE not offer a limited number of /32 allocations for operators of anycast fabrics? I suggest that RIPE offer 16 allocations of /32 to organizations who intend to operate diverse anycast fabrics globally to serve TLD operators and others who can benefit from an anycast fabric. Select the winners by beauty contest based on technical and commercial fitness. --Michael Dillon