EDIT: On PS4!
I switch cameras between Co-Op (which is the best for being tactical and has the benefit of appearing to slow the gameplay down because of the fact you're further away) and Tele Broadcast with max height and minimum zoom (little bit closer for taking on a dribbling opportunity).
Control-wise - in 17 I had to use assisted but in 18 I'm in love with semi-passing (and shooting) now, after an awkward few days trying to adjust. It means no silly first-time perfect passes, but... If you play on World Class you'll see the AI hitting them occasionally (even with sliders), so it's a little annoying.
Difficulty (on 8 minute halves), I'm constantly back and forth. But, I made some discoveries last night, playing the same career mode games (as Bolton, against Leeds and then Cardiff) about 5 times each. Speed set to SLOW. My pass error slider is set to 55, with the AI's set to 54. My pass speed is 44, with the AI's set to 34. (I want to reduce acceleration too but it introduces some weird "ew don't make me touch the ball" animations, so I'm still messing with it.)
On Professional, both sides tended to finish with around 83% pass accuracy (same as pretty much every FIFA 17 game I ever played on Legendary) and about 18 shots each. Fun but barely any midfield pressure.
On World Class, I finished my last match with both sides having 70% pass accuracy (so, so happy, the lowest I've ever seen), and about 8 shots each. Much, much better. BUT, there was a lot of silly perfect first-time passes from the AI (which sliders don't seem to be able to kill off completely) and so much pressure.
On Legendary, pass accuracy was up and down between 78% and 85%, with the same amount of shots each and less pressure, and it feels nicer to me - BUT... It's definitely easier than World Class (though they're more likely to score).
So I'm between World Class and Legendary...