So apparently Ctrl+Alt+F is the new monitor fade hotkey... having disabled all unused function hotkeys ages ago, It took me a while (and several trips to a game's support forum) to realize the reason the hotkey wasn't working in-game, was because display fusion had hijacked it...
I would suggest that when you add new features/functions that you leave the default hotkeys blank, so others don't run into similar surprises... Also a 'set hotkey defaults to: 'None' would be a nice button. It would take any function with an un-modified hotkey and remove the hotkey.
I only use about 5- functions regularly enough to have a hotkey (well I use more, but I have a function that list 10~ other functions so that I dont need to memorize those hotkeys)