I have no doubts your system is a very powerful and scalable solution for pubsub, but I believe just the fact that it's not utilizing Websockets, the overhead is not acceptable for MMOs or other latency sensitive tasks. So you shouldn't advertise as such, people might actually believe you and try and build one. It'll blow up in their face when they realize they can't get the latency down to an acceptable level due to the 200-300 extra bytes per request and the delay of constantly opening new connections.