IIRC, one of the main reasons why most of the games I've been in eventually switched to the 2 step vore process was because it made the Improved/Greater Chomp and Backbiter feats seem a little too necessary; otherwise you'd be tied up with your opponent for multiple rounds, and it might not even work out.  Greater Chomp and Backbiter to a lesser extent were designed with the 3 step process in mind though, so they both got absurdly good when it meant that you could instantly down someone in a single round.  I'd say stick with the 2 step, just to avoid reverting that large of a change, but take out Greater Chomp and perhaps put a caveat on Backbiter such that it can only be used on unaware targets rather than just any sneak attack to bring it back closer to what it's intended to represent.<br/><br/>As for Voraportation, that could be as simple as it requiring the target to fail a pair of saves in a row over two turns.  It would still work as it's meant to thematically, but wouldn't be any faster than normal; the only advantage would be the range it allows the predator.<br/><br/>On a side note, I should have my character done soon.