Okay, so what is this "fly-by-wire" line of coding supposed to do, or what do you expect it to do? :-?
I expect it to give a whole new responsiveness to the stick input for the given plane, not making it react like in a flash game, but just in a different maner... a bit like in the Su-35 sim (Super Manoeverer, made from the engine of Flanker 1.0) when you activate or desactivate the flight computer.
In FS, some planes are really responsive, so responsive that you can trigger a cobra-like manoever with them. The perfect example I have in mind is the Mitsubishi F1 (there's only one, with a VC, a GREAT plane, but flies like a brick

Putting the difficulty to easy will limit the flight model realism, which is really not what I want.
But that is what fly-by-wire does; makes controlling difficult airplanes a tad easier.
It makes a filtering and adaptation of the plane movement, but stalls, spins, slides and turbulences are still there, unlike in "easy" mode. Also in easy mode the plane would become far too much responsive, performing manoevers (voluntary or not) it would not be able to perform with full realism.