In my quick observation, during the Houllier's regime, Gerrard and Hamann were the executors of most free kicks taken (directed to the net). We have also seen some fantastic free kicks taken by Murphy and Riise.
When you assume that Houllier had made some misjudgment e.g. in assessing Biscan's position; having us playing too defensively; keeping Heskey "irreplaceable", etc., there must have been some chances where he was also mistaken in pointing out who's to take free kicks on a regular basis.
Now, in your opinion, who should bear the responsibility to take most free kicks awarded?