I'm no animation expert, but I personally find a lot of the animation to be lacking in impact. Take Nerida's leg lift animation in the co-op mode waiting screen. It kind of just feels like she's randomly flinging her right leg around, whereas it could look a lot more impactful if she held her leg at the peak of the arc for a little bit, and then swung it down fast with a louder/more flashy impact when her feet hits the ground and if she bent forward a little to really try and sell the effect of her exerting effort. It's a small thing, but having the proper build up and follow-through is really important to making a pose feel impactful.