Looks like Athletics(Trip) is the hidden superpower for Fighters. In Pathfinder you need a whole string of feats to be a trip master, in Playtest any first level character can jump right in.
High strength and trained/expert in Athletics versus targets with weak reflex saves. High chance of success. Second action an attack against the prone foe at full attack bonus (-5 second attack, +4 prone, +1 agile). Third action another attack against the prone foe at full attack minus five. THEN all your friends get to beat on the prone foe. FINALLY all the fighters get a free swing at +2 when the foe stands up.
