The character may have been stoic and reluctant to open up for a lot of her time on the show, but she has also had some deeply heartfelt plot lines, ranging from her relationship with Andrew/Lash to the loss of Coulson, that required a lot more of Wen than the ability to throw a punch.
That’s not to say that Ming-Na Wen’s only contributions to S.H.I.E.L.D. involve her action sequences, however.
Fortunately for S.H.I.E.L.D. fans, her decision to never do action again after Street Fighter didn’t stop her from taking the role of Melinda May in the MCU.