First off thanks for the AWESOME control!

I would like to see an event added that gets called before populate makes the call to the server (ie. just before the .ajax call).

This would enable easy setup of caching, modification of parameters or even customization of urls according to query parameters. I manually added code to do this to the grid base js, and now have really nice caching of previously requested pages :)… I think this would be usefull for a lot of different applications.