More comprehensive documentation
More real world code examples, better documentation on server side scripting as it pertains to Mobile Services specific classes and methods, lol the elusive "Better" across the board.
Serge van den Oever commented
The best documentation is the code of Azure Mobile Services itself. Have a look at http://weblogs.asp.net/soever/archive/2013/07/26/azure-mobile-services-revealing-the-internals.aspx.
Which real world code examples would you want to see first?