Well, I already have some questions to ask about the new system. Does Improved Grapple apply to both checks or only the one to actually grab an opponent?<br/><br/>In addition, would a character using Rest Belly still be considered helpless if the prey escapes? If so, it would in theory be possible for a prey to use their two move actions to escape being eaten and the grab, then use their Action Point to Coup de Gras the would-be predator.<br/><br/>As far as balance, I think it'll be interesting to see how it works out using Athetics and Acrobatics for escaping. High str characters and high dex characters will have a hard time keeping each other down. I do like how magic is more effective to use as an attack inside the stomach  as it will be harder for casters to escape since they will in theory have lower reflex and athletics.<br/><br/>The only feat which I'd say seems entirely overpowered is Mobile Predator. The fact that there are no penalties as soon as the prey succumbs means that digestion time is effectively reduced to a matter of rounds rather than hours.<br/><br/>Edit: I found another question. What do the stuffing penalties become after the pred is halfway done digesting?