I'm all for IPv6, but will adding IPv6 support be enough for you? I think you will still likely need to talk to IPv4 peers for a while since I doubt everyone in the pool can make the switch.
It does not have to be all or nothing. You can run dual-stack as IPv4 addresses slowly become more and more scarce. APINC has run out years ago, so many of those new Chinese users are likely to be on IPv6.