Well from what I can tell, the buttons to the left of the throttle are no use in DCS and as said by someone else I already have the panels behind it in my simpit.
Also, it makes it very aircraft specific. Lets say you made a stand alone throttle you 'could' make interchangeable throttle tops for different aircraft, once you have an F/A-18 base then its an F/A-18 forever.
A bit like the Stick, if Thrustmaster ever got around to making the F-18 Stick (or any other) the gimbal is just a gimbal and non aircraft specific you can attach the new Stick but their throttle is always an A-10 Throttle.
I just think you could make a stand alone throttle then perhaps and additional panel so you can buy it with or without you may get more sales?