i think it all has to do with the scale down, i meam the bug is in the scale down system.
it seems to me that it almost only scales the model's
physical size down, i mean .. use first person and play normal hl-single-player levels in esf. your eye (point of view or w/e) is not scaled down. even if you play in third person, you don't feel that the place is any bigger than it was before. only the model is smaller.
the way you walk, is the same way you walk without the scale down. so it looks wierd with the scale down not being "perfect" (i.e. anims don't match .. ect)
same with the footsteps (P.S. i can't belive you don't know that when ur a mod
its been brought up several times and ppl would probly tell u to search if this was posted like 5 months ago =P) its because you don't really touch the ground (u no touch "teh" ground, is no footsteps. no footstep, no sound) which is a problem related to the scale down. there is something called hulls and watnot; honestly i know nothing about what the hell is it but it has to do with something about adjusting the map boundaries with the new scale down or somehing like that.