>Asuras placed no limits
You mean, he placed no limits that he told you about. Skys was mad as fuck when Asuras revealed all the hidden nerfs that Forbes had, you know? And Psyker was blindsided by the fact that Hallowed Ground's buff-cleansing could be resisted by Fort when he first used it against Shotaro.
Hell, the fact that the first roll someone has to make against Moon Biting Fangs is Finesse vs Perception in order to be able to dodge it isn't in mechanics...but that's also a thing that I learned after asking Asuras.
So really, the mechanics are just a basic idea.