Not sure I fully agree. While it would be nice to have an awful lot of "important" 3rd party SDK's it's really not that important. Here are two very good reasons why:
1-We are all aware that the programming on AppGameKit is effectively a one man job and that AppGameKit is far from complete with the current set of goals. Adding more SDK's in is (in my opinion) not anywhere near as important as getting the currently promised set of goals complete on every platform
2-Hacking IS programming. If you get into the interpreters and start hacking these SDK's in you will learn far more about programming than by using some ready / easy to use in built commands. While having them is nice it is important as programmers that we understand HOW to hack when the current toolset does not contain the tool we ourselves want / "need".
Every single project is different, as is every single programmer and no single toolset contains everything that they will all need. Go on any software development forum and you will see that most programmers don't complain about the tool not being there, they ask how to integrate it, and normally someone will show them.
There aren't many toolkits that support that many 3rd party SDK's either (certainly not for the price). I've looked at a lot of them and funnily enough I keep coming back to AppGameKit, as do all of you
