Ah, the good old "mouse click" control argument. All well and good until you get a Danger Close where an amount of finessing is required, or you are given a standby as you roll in on attack heading, or there is a pop up ROZ that's not in the kit, or there is weather obscuring parts of the target area, or etc...
I always liken mouse clicking to driving a BMW with cruise control - fine for motorway cruising (read first night pre-planned strike) but rubbish for driving accross London in rush hour (read COIN CAS). X-47 isn't designed with armed-ISR or CAS in mind, it's a first night high-tec low-observable strike weapon; you couldn't get much different from Reaper (like comparing an A-10 to a B-2!!!).
I know there are RPAS out there with mouse clicking interfaces (such as Watchkeeper, RQ-7 Shadow and Gray Eagle), but they do not offer the same amount of flexibility that you can exhibit with standard flying controls as fitted to Predator and Reaper. If the use of a mouse was so great for aircraft control then the pilot would have one in Typhoon, F22, Airbus A330/380 and B777!
LJ