I agree with u guys, At St should be more real, and if u allow me to make another suggestion, i would say make a vulnerable point in AtSt and powerup its lasers. ^^

Look at my previous post.  It shows a side-by-side comparison of the First Strike and Return of the Jedi walker movement.  About the only difference is that the RotJ walks with a "limp" in a few scenes, but that's because it's got a bunch of ewoks hanging onto it like a child holds onto their mothers leg when they're being a pest.  Also, there are Two separate spots in the AT-ST where it has decreased damage resistance, you you can hit either one from anywhere except directly above and infront of the cockpit.  Also, the AT-ST takes out any infantry in one shot with a direct hit, it doesn't need any more power than that.