Not had my Cayman long although it is my third Porsche and two features I love that are new to my 718.
Manual stick shifting of the PDK is the correct way around. Pull to shift up, push to shift down. It was always the other way previously.
Also, if driving in auto mode and you want a quick down shift to the best lower gear, just a quick prod of the throttle and the car auto downshifts immediately. So simple, so useful.