Most developers branch out because they see a successful playerworld and think they can make their own, so then they hire developers branching out even more. And then the graal population is all spread out.
I think Inf's idea with bringing all the developers together would be great.
Maybe a global should actually get the best, seeing as they are global people will want to work for them. Like spark was going to make a server because he was bored not long ago :P