As someone who felt miserable most of my time playing FIFA19, i was not excited for this demo at all, but ended up giving it a chance anyway:
This is FIFA19, but slower, heavier, and with a less "ping-pong" A.I.
So yeah, i think it's much better and more realistic than the previous iteration, had i waited one more year to buy a PS4, and ended up getting this game instead of last year's, i wouldn't have suffered as much. I would've still probably bought PES2018 to replace it anyway tbh.
This is still just another standard FIFA i think. If you already liked it, you'll probably like it again, but if you despised it, then you'll probably despise it again, the only thing that i think could change this is VOLTA, which i think it's fun, but not US$60 worth fun.
What bothers me the most is that, besides VOLTA, i think that there is absolutely nothing here that couldn't have been added to FIFA19 through a patch.