People complaining about pace being nerfed too much: pacey players still exhibit clear advantages over slower defenders in the game, but only when the attackers are not in possession of the ball. Defenders can keep up only when chasing a player who has possession, and if you think about it, it sorta makes sense. A player who is dribbling isn't likely to be running at full pace when the ball is close to their feet.
It makes flicking the right stick to play the ball directly in front of you while sprinting with very important. And because these forward flicks can vary in distance, running down the wings is much trickier to pull off, but feasibly not impossible.
On the plus side, this also means that playing slower, stronger defenders and centre midfielders is feasible again, especially if they have solid passing to go with it.
In the 6 or 7 games I've played online in Seasons with the XB1 EA Access version, anyone who has tried to play similarly to 15, aka lobbed through balls being the primary method of getting the ball to your strikers/wingers, have very rarely succeeded in scoring.
Smart passing play to create space for your best shooters in and around the box is the way to go, with shorter controlled passes preferred as long passes or rushed blind ping pong passes are intercepted easily by defenders. In addition, people using high pressure won't be as effective if you're constantly passing the ball and opening up their defence. The directed pass using RB is useful if you need to pass a fair distance, but they're risky as the receiving player has a large chance of screwing up the first touch and losing possession.
You can still utilise lobbed balls going forward, but they only succeed when the attacker has plenty of space really.
Headers also seem to have finally found a good middle ground. Actually possible to pull off from well placed crosses and corners compared to 15 but not OP like they were in 14. And keepers are much better than 15 but still very prone to parry easily catchable balls. Nothing remotely game breaking though.
Stamina also seems to be slightly more important. Bringing on fresh players late seem to have more of an impact that what I can remember in any recent FIFA game, though it's a bit early to say this is definitely the case.