First impressions from the Beta:
Graphically the increments from Low > High > Very High are small, then from Very High > Ultra is a huge leap. Textures and view distance even at Very High was quite poor - and objects simply pop into existence which isn't exactly immersive. The weapon effects are pretty bad also.
Gameplay - the UI isn't exactly intuitive. I did a few hours worth of Coop play and other players would randomly spawn all over the map, sometimes up to 2km away and I couldn't fathom why. Maybe it was just me but I had a hard time maintaining spacial awareness with my friends around me whilst concentrating on the objective.
The HUD notification that you've been spotted / contact is super-jarry and really fucks with the flow of the game. I like being notified but the sound effect / visual effect grated on me after 2minutes. When in contact - the red arrows to give direction to enemy fire is also bugged as hell. It would rarely, if ever, point to the actual direction of incoming fire.
Whilst on missions and objectives - enemy patrols would literally spawn ontop of the cluster of buildings. At first this was infuriating but I quickly realised that infact nearly ALL objectives are simply nodes next to a road, and that at regular intervals enemies would simply drive along the road and vehicles would repeatedly just dump badly-scripted AI players onto our objective again and again. I would much rather they dramatically scaled up the AI ability whilst on objectives rather than just adding difficulty by spamming fresh mobs onto these zones whilst you occupy them.
The combat is somewhat clunky and there's too little differentiation between the weapons for it to make a tangible difference. Enemy overhead vehicles are way too over powered - a helicopter will literally lock the whole squad down indefinitely unless you have RPGs.
Vehicles - as has been said their control is currently bad! Helicopters handle like puppets on strings, motorbikes randomly change direction at whim, and I was repeatedly just thrown off and killed for no reason.
The world - seems sparsely populated. The enemy 'nodes' are small and pretty generic, there's a sense of a civilian presence but this is limited to a handful of civilians merely walking along roads, driving cars or standing about waiting for you to shoot them by accident and fail a whole mission. They don't do anything, or interact with the world in any tangible way, or so I've noticed so far, unlike games like GTA V where you feel like you're in a living world.
Overall though, I can see that this game does have potential, bugs don't make a bad game; ask Bethesda, but at the moment it really just feels like The Division with vehicles in the desert. Once you've completed a couple of missions everything reverts to becoming super repetitive:
1. Drive to objective A.
2. Kill everyone.
3. Collect Intelligence / operative.
4. Deliver it to objective B.
5. Goto 1.
Entire game in a nutshell. I mean, this is most games, but somehow the likes of GTA V make this fun, and I hope that once we're let out of the starting-area sandbox this game achieves that as I've been looking forward to it for the longest time, but they've got a way to go in a short amount of time.