I've got the work-in-progress of the new input devices dialog in, but  

disabled.

If anyone wants to give it a try, verbs.cpp needs  

USE_NEW_INPUT_DEVICES defined to switch it on.

The main thing it will allow is that the test area should show device  

button and mouse events from devices, and should list all that are  

configured. Some feedback on what goes on there could be handy.