Quick thoughts:
I don't know how but this games pace seems faster then 4. Plays kind of like hardline
Tanks are very difficult to take out. If a full squad is in there forget it. I don't know why all the AT grenades are on the D-pad. You have to press that, then a trigger to toss. And the throw range is weak.
Melee is satisfying and hilarious. Same with charge kills.
Guns are really smooth, esp the LMG. Thought it was going to have those extreme recoil pattern like the launch BFH ones but it was fine.
As expected in an open desert map, lots of perched snipers.
Didn't really notice any changes to conquest except it was building tickets instead of bleeding. Still felt the same in terms of gameplay and length