This may be about JustCode but its really about WPF. So, move this entry if you think it'd be better serviced elsewhere.
Do you have a tool that will highlight Binding errors? I realize that Binding is hard because its not until the control is bound that we know if it worked or not. Right now, the only way to tell is by watching Visual Studio's lame Output window... then, its hard to spot the exceptions.
Even if it is after the code is started, it'd be awesome to have a tool that would list and allow navigation to controls that encountered a Binding error.