Let me first say that this all-fours running is a horrible retcon. Charr did not run on all fours in GW1. Beyond that, having a well-dressed Charr scholar dragging his fine robes on the floor just looks ridiculous. It also (perhaps as intended) gives them a more beastly appearance, but which is not consistent with the way they are presented in the game as intelligent, thoughtful creatures.
Finally, the all-fours animation is only used outside of combat, so the animation assets for bipedal running are already in the game as seen when running in combat. So I don’t think I’m asking for too much here. Just give us an option not to use the all-fours animation.