So played a few games now and these are my impressions:
- Graphics are fine! Not the best, but they will certainly do, the Polish video didn't do the game justice
- Loads of new animations that make the game look better!
- Gameplay is more fluid, but sometimes too fluid, when a pass is played in a perfect straight line over half the pitch it resembles hockey (with rain on, it feels more like football as the rain slows down the ball)
- Game play is more physical, bigger players can out-muscle and push away smaller players
- Finally you can score with headers again! In PES 2015 I hardly ever scored goals through headers, but now it is much easier (but perhaps too easy? I managed to score a header with Messi)
- The AI manage to score goals through free kicks again! I hardly ever conceded a goal to the AI through a free kick in PES 2015, but now it happened almost instantly
- The squads are hopelessly outdated! Hopefully a datapack or modders will fix this asap.
- Overall - the game is an improvement over PES 2015 and well worth the $30 I bought it for.