Over all I really like this game though it needs a little more tweeking I think it will provide many hours of fun both solo, and coop. I hope these suggestions help out the DEV team in some way.
Liked:
Great terrain models
I really like the direction the story is headed
Weapons feel a little more realistic
Love the bullet drop after some practice I was dropping targets at 597m with one shot
I did a lot of free exploring, and found very few places I could not go that's a major plus with me
The varieties of transportation
The wild life adds a nice touch
Even if the AI were alerted to you if you stayed prone and quiet they would lose you as long as they did not walk right up on you

Did not like:
The way the camera moved when you are driving/flying we need a way to lock it in place
I know it would be tough to do but a little further draw distance would be cool
The fact that every sniper rifle I used had the same ballistics(bullet drop)
More control over the AI ie. being able to individually control them.
If your team mate is spotted the AI automatically know where you are as well no matter how far away you are.
When your in a faction owned helo, and fly over that faction they alert to you, but if you fly by another helo of the same faction it does not alert
when your sniper rifle or nade launcher runs dry it does not auto reload like your AR or sub gun does

Glitches that I feel could be fixed:
There are location in rocky areas that if you fall in your trapped, and you are forced to fast travel out.
On more than one occasion we were unable to grab/interrogate the LT in the FOB Armadillo mission.
On more than one occasion we were unable to get Amaru to board the helo for extraction he would just loiter by the helo. Though we did figure out if you left the front passenger seat open he would be more likely to get in.
When you try to activated an item ie. supply drop, ammo box, or entering a vehicle you have to be standing just right to use it just needs the tolerances loosened up a bit
Sometimes your suppressor will randomly come off your weapon after stowing which can be awkward when you pull it out to make a stealth kill and go loud lol
Sort of like the above problem your suppressor is on your weapon but you are hearing an unsuppressed shot that alerts the AI.
The mechanic that allows you to shoot around or over objects is to clunky it is very difficult to line your player up to shoot around objects.