History has not been on your side, because the people working on each era never started work in Korea and then went to another of the mods, but instead started doing work for the mods when the one that interested them started up.
Korea has been promising beta for quite some time, and delivered.
Its been promising open beta for a couple months, but it has nothing to do with the work the volunteer people have or have not been doing but instead relies on the engine and server side/client side software to be acceptable before they release it.
This does not tie into being too spread out either, since one engine works for all the games.
I would go more into it, but I simply can't.
-SW