Definitely would like the animation to have more detail and more consistency between frames. Like you say, they're still quite enjoyable, but would be great with just a little more polish. Cum especially looks like off-white paint streaks, with no viscosity or highlights. Also the way it lies on the body doesn't seem to follow the curvature of the body either.
Also, some of the older scenes are framed a little weirdly, where the characters are off to the side, and the action isn't centered. For the Ms Amos scene, I had to move the whole scene to the left and fill in the blank space on the right (you can see some parts there are still a little sketchy).