Hi Cobra:
Yep, the new Reverse Flight Plan button is a welcome addition. I had forgotten about "Clippy," and like you, I wouldn't want iFly going down that road. But I thought that if iFly were going to offer to reverse your flight plan, it needed to ask somewhere.
I was going to suggest then that the dialogue about "Do you want to reverse your flight plan" could be moved to the Flight Plan page,which would address your concerns. But moving that question to the FP page would be pointless, since the Reverse button is already there.
So never mind. (Such is brain storming.)