After sleeping on it, I realized I can just make a new ABP with the animation sequence looping + nodes + a new AnimNotifyState casting to the new ABP. I now have a preview. I am still not able to play the AnimSequence AND view the trace action during runtime (after placing the new animation sequence in the level), which would be nice to see on sloped surfaces, but I am sure I will figure out a way to place actors in the preview, or maybe change the default rotation of the preview animation on the floor provided in the preview window or something.
