The facing down thing is a good catch. I can fix that easily.
the feedback is hard to do, messages often get crossed between moving/hitting script and the on hit script so they seem to interrupt eachother. I have an idea that might fix this but I'm yet to come up with something I know will solve it.
The collision is enabled during punches and disabled otherwise so actors can walk through eachother but still get hit by projectiles.
If gbs let us flag some Collision boxes per frame in the animation mode rather than by shooting invisible projectiles I think so many game styles would be more viable. Hit detection in general is kind of rough in GBS right now.