Well actually some classes with heavy armors like Knight and Vanguard will not be able to climb ( or will climb slower) but other classes like the man at arms or the archer shall be able to climb on trees , buildings, rocky cliffs etc. That way Archers will be able to be climb on positions for better archery or escape from a Charging vanguard. The man-at-arms will be able to do ambushes from up the trees or kill archers on top of other locations. So would you like to see Climbing?
Yeah have fun shooting a Longbow from a tree…