You're right that there aren't many truly large-scale seamless MMOs out there, and I agree that this project would help servers scale their worlds.
Sorry if my previous post came off as dismissive, as a game development enthusiast I was focused only on the application to games rather than the technology itself. The point I was trying to make is that even with this technology, we are unfortunately not closer to being able to create real-time action mmos. For an advancement in this area, we need a leap in network capabilities, rather than server efficiency.
Sharding like done in Eve is well established technically in the game development community. And I agree that this basically solves the problem we already know how to solve. The problem is in content, Most MMO's are designed to be content heavy, with zones of high-traffic, this causes a population density problem that creates the exact bandwidth problem you mention.
This doesn't solve any new problems, what it does do is provide a licensable technology that many studios have to re-invent themselves, there is value in that however.
Sorry if my previous post came off as dismissive, as a game development enthusiast I was focused only on the application to games rather than the technology itself. The point I was trying to make is that even with this technology, we are unfortunately not closer to being able to create real-time action mmos. For an advancement in this area, we need a leap in network capabilities, rather than server efficiency.