No, I suggest that you keep the flipping glitch.
Melees are pretty powerful, with the butterfly capabilities (except daggers, of course) and the superb KStyle acts (DStyle too), they pretty much depend on the ability of melees.
Now the flipping:
I think that the "immobility of someone who just got hit by a flip of a melee" was just an accident, a bug, a glitch, an error in coding. But you see, flipping makes melee weapons worth the attention. The flipper and the flipped actually learn to use this outstanding glitch, even using it for such deadly attacks as Infinite Juggle and Instakill. Players actually expand more their "alert system" for possible flips, and do the same thing to the guy. Players observe more (I wonder if this word exists
) of the things happening around the map, which is a pretty helpful tactic.
Flipping is just one of the few "glitches" that MAIET should treasure....
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"I never found the companion that was so companionable as solitude. We are for the most part more lonely when we go abroad among men than when we stay in our chambers." ~ Henry David Thoreau, "Solitude," Walden, 1854