a few reasons why I like AFP.

3D .. what can I say... im a Pro Bro.
Radio config. EVERY CHANNEL is able to be reasigned... the problem I have now is I have run out of channels on my 9C for everything I want. but I have flaperon mixing spolierons and everything I want.
Slope soaring. yes you can do it in AFP. select the desert scene. put the pilot up on the hill to the right.. add 2m/s wind and grab a sail plane... you will get lift from the wind coming up the hill.

some things I want. in AFP.
multiplayer...
smoke doesnt react to wind... it reacts to propwash but not wind.
better engine sounds. (yeah I can insert my own with a bit of work but I am lazy)
engine cut offs and more TWINS want to practice my engine out flight with twins other multis.

some things that would be nice in AFP.
radio configs acording to plane selected. would be nice to have smoke setup on one plane and have it for only brakes on the jets and still have it the hook on the tow planes...
selectable failures.. like g2 with servos failing and such. AFP has "radio reliability" but its not the same.
random weather (starts off calm but winds and such can develope during flight or as defined by user.)

all in all I really like AFP and has helped me get my "fix" this winter. havent touched G2 in a while but I might just for flying with friends in multi (if I can get my new computer working )