The only complaint I've had with my 720 is the time it takes to automatically switch from one sectional to the next on. When flying at an angle across tow or three charts, you are in the dark what seems to be a considerable time before the next sectional pops up.
My wife recently won an iPad mini as a door prize. We installed the FlyQ app as a trial, thinking it could be a back-up for the iFly. The first thing I noticed was that you can zoom in and out across sectionals with no hesitation at all. It doesn't have a moving map (BIG Minus in my book), but the sectionals just drag seamlessly from one to the next - you never see the seams/edges.
Implementing this in the iFly would just about perfect it in my opinion, though I don't have a clue as to how they did this (magic).