I hate the clicking thing too, so I wrote a DataBroker addon locally that displays the current dungeon/raid difficulty settings. It doesn't do anything but display the settings so if I want to change to heroic/non, I still have to do the clicky thing; suppose I could add that if desired.
I'll upload it after the raid's over and probably my LDB flask timer too
Edit:
V_Difficulty uploaded. It's pending approval now, so have at it once it is.