I mentioned this in chat over the weekend, but as someone who was doing a bunch of mining I found it a bit bothersome that I didn't have access to view and sort inventory while my toon was locked and working.
I don't have any issue with the not being able to *do* things, but opening bags to see the status of tools or reorganizing where ore or gems are going to as I sit there underground for 5 or 10 minutes would be quite nice.