Fair opinion.
I figured, if it is possible to make software like Xpadder, JoystickGremlin, JoytoKey where one can customize device output almost ad libitum, and make games like DCS where button presses and flip switches can be interpreted to mean 'on/off' or '1-2-3' or 1%-100%, it would be equally possible, that someone somewhere had thought to make software, that visualize the same information. Most device software visualize when I press a button, which button I have pressed.
For example in DCS, if you have add a switch as a modifer, there is Nothing - no visual feedback at all - that tells you, whether that switch is on or off. And unless you note it somewhere, every time you push it a checklist will not help.
Level one - an acceptable solution - would not involve feedback between DCS and the visualization software. If the 'gears' box in the software by default is 'down', and at the beginning of the mission, gears in-game are up, I could just pause the game and press the gears button to synchonize.
Level two would be with feedback.