Along with BASIC and FULL, you can use EXTENDED. This will give an additional set of Profile attributes.
The library supports AS3, but if there is signficant interest in an AS2 library, we may begin working on one. In the meantime, send me a message on myspace or email me at jestrada@myspace.com to get the current MyOpenSpace AS Library. The MOS AS lib is a port from the opensocial javascript library. This library is built on top of a subset of the MS REST API. Resources not realized from the REST API in the first iteration of the MOS AS Lib are: Friendship, Interest, Details, Groups, Status, Mood, and Comments.
Here is a photo of the currently implemented features in the OS library:

I will tag any posts related to the MOS AS Lib with "mosaslib".
I've created a post here with more info and a code sample.