Realistically speaking Edmontosaurus is around, slightly under or above depending on where you ask, the size of a Tyrannosaur. And since I'd rather use ARKs setting to spice it up a bit it's been put up to equal Rex in size when standing on 2 legs alongside some more defense-oriented adaptations.
It's also focused on being a proper beast of burden, however I wanted to make it not just another carnivore-fodder hadrosaur at the same time. The base weight is quite solid and while equipping the cart saddle it's expanded even further to carry even larger quantities. Quad stance gives slower movement speed in return for lower stamina use while biped gives higher speed in return for higher stamina cost.
I specifically wanted to avoid giving it a front leg stomp as well since I just find it silly when hadrosaurs put their full weight onto their spaghetti looking front legs, so I opted to give it more of a punch instead. It excels at keeping animals off of it by using light CC however it can also deal some devastating blows and put you into a precarious situation if you get hit with the tail slam.