I... ???
Uh... :-\
Well, that's already...but... :o
Okay, you may be right. On the other hand, using jumping movement makes it just as difficult as an actual DFA, so why not go whole hog and get the punch chart hits?
Oh yeah, the LOS thing. Charging units still get cover, while DFAs are visible to just about everyone.
Time for some MW2-style jump-skating, it seems...