Feature Requests:
Not sure if any of these features are already there, or not, but I didn't see them.
1) Image based dual state LED's like Mach3 has. In my 2010 Screenset, I was able to create fake checkboxes and radio buttons using dual state image LED's. You can use these to "fake" quite a few things that are normally not available. It would also be nice to just create better looking LED's, as the default LED's look like crap compared to the rest of the screen controls.

2) Tooltips. A lot of my 2010 Screenset users have asked for tool tips, for help in knowing what a particular controls function is.