Not a fan of the new defending, but the engine changes are great. Really feels like you can take people on again with the new shorter dribbling system; one of the biggest things that has always made me want to throw my pad through the window online is endlessly running into my opponent due to being almost entirely unable to change direction quickly enough before a tackle comes in because of the added latency. Hopefully this will alleviate that somewhat.
Back to defending - I know EA have to try out new stuff to try and keep things fresh, but this system smacks of the time when PES was king and EA was trying and failing with all sorts of ridiculous systems for passing, shooting etc. In the end, they got it right because they pretty much stole PES's control system and made it better with minor tweaks. This new system is potentially going in the wrong direction again, but hey, time will tell.