motivating questions (a sample)

number of network prefixes in table
reduction beneficial to [routing system] infrastructure
trends in routability of IP space given by registries
which ASes are most highly:
connected, vulnerable, controlling connectivity
is there an Internet `core'
does the core grow due to multihoming?
are more-specifics what is driving up the table size?
hop diameter of AS, AS diameter of IP paths
optimizing active measurement architectures

     can topology be inferred from BGP tables 
     for the purposes of modeling, simulation, 
     and infrastructure analysis?