There is only one person working on Game Editor currently, and that is skydereign.
He works currently on making the interface better and removing bugs. He has also said that he intends to get GE 1.5 released, but that'll take time, since 1.5 is currently in a messy condition and needs a lot of work.
Now, what you're suggesting are all huge things for one person to add to Game Editor. Sure, everyone would like these features, but you have to remember the reality. There is only one person working on Game Editor, and he has just started working on it, so he's still figuring out the basic parts of the program, and features like networking, facebook integration, and new exports require one to have a clear vision of what is going on in the whole source of the program. So adding that kind of features is just not possible at this time, with no-one else helping skydereign. And making Game Editor's interface bug-free and eventually getting 1.5 ready are much higher priorities at this point, and they are also realistic goals for skydereign. Realistic, but still requiring a lot of work.
By the way, sky has removed the splash screen from GE in his first new version of Game Editor, 1.4.1 Beta. Here:
viewtopic.php?f=1&t=13001 You should have a look at that topic for getting an idea of what sky is planning to do, and what he is currently working on.
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