Some issues we found playing:

Difficulty: It seemed to us that if one person on the squad was set to Recruit and everyone else was on Ghost, it changed the difficulty to the lowest setting for all.

Driving: A complete joke. This aspect of the game is so arcade that it has become the stuff of comedy videos. Driving a vehicle causes an immediate laughing fit followed by driving off cliffs and watch the vehicle survive and right itself and drive off.

Player Controls: The player controls feel sloppy on PC. There is a slight "Disconnect" between your input and what the character actually does. I feel this may be helpful to some console players, but not to mouse and keyboard players.

Weapons: The muzzle velocity is too low. It would also be nice to tone down the sound from the impact.

Enemy: Hit and miss on this one. I have had encounters on GHOST where it seems to ne a piece of cake and others on a lower setting where we get hammered from all directions. Seeing as this is a one skill difficulty area on the map it is hard to say if this is really a problem or not.

Team: I wish that GRWL and The Division allowed a 6 man squad. I am not sure why they picked 4...

Players getting stuck in the terrain and needing to relog. It happened to me a few times when trying to approach a target area. No Vault for objects to climbable means you're stuck
Edits to come.....