wimax has multicast ,so use it
its pritty simple really Sprint and all the worlds isp's want to save bulk bandwidth right.
wimax has multicast to and from the end user cpe kit as a generic bandwidth saving protocol ,so use it.
Sprint take the existing free java az/vuse codebase and the existing bamboo multicasting dht java cadebase and retrofit them together for free all it takes is a few quid to commission some coders to make these simple changes, add in the required new multicasting p2p and add a tunnel for this new code to use and end users to to take advantage of if their isp doesnt allow open multicast traffic and everyone wins.
so do it asap Sprint and the other isps and its your cheapest option anyway, potentially saving vast amounts of wireless banwidth and eveyone wins, you vant ask for more and you might start a new trend and have lots of 3rd party coders retro fitting multicast in to all the current high bandwidth wastful unicast streams haveing no other choice until multicast is finally provided end to end to the paying customers/end users cpe kit.