Thoroughly enjoyed the map and new features/content, despite some of the bugs.
Some things to note though:
While making water scarcer through less wells is excellent and refreshing (no pun intented), I would love for there to be more ways to obtain water in improvised manners, such as catching rain with any container and possibly even making a funnel out of a jacket or something (piece of plastic/waterproof clothing with a hole in it, four sticks for the corners and a container in the middle to catch it, you would set it up a like a trap).
The ruined buildings seemed to have lots of loot in them, but I think this is largely because so few people made it south and even fewer checked these ruins (ruins on Chernarus don't contain loot).
Storms are epic and properly scary, they disrupt traditional gameplay and force you to think about actually moving from cover to cover.
With boots, raincoat or other form of waterproof clothing (Gorka?) you shouldn't get wet very fast and even if you do, it shouldn't go past "damp" (except if you go swimming ofcourse).
Fishing rod should be attachable to your backpack or equippable like a melee weapon (can't recall if that worked).
Cold/hot mechanic needs refining as others have pointed out, bit like food and drinks it should probably have 5 states instead of the current 3, with health loss only occuring with the extremes and some kind of "discomfort" associated with the other two states (cold -> more vulnerable to disease, hot -> more water/energy drain).
You should not have to drink for multiple minutes at a well to go from red water to white water, it should honestly take about a minute max unless the person is severely injured or sick.
I still have a hard time finding berries or other plant-based food, maybe it's just me but even checking an entire orchard I could not find more than one apple.
The loot type being "spread" out to neighbouring buildings makes some sense, but perhaps it's a better idea to have the loot in dynamic spawns like cars etc around that particular place (eg. military cars outbound from a facility).
Many melee weapons degrade too quickly, but I suppose it's aggravated by not finding the equipment to fix them up.
Loot still seems to "bunch up", often you will find very similar items in a certain town or even server, for example, I found many KA-101 magazines in one of the southern compounds and lots of 556, but no 545 or even 762x39. Many problems could be alleviated by forcing loot to be more diverse or set some kind of limit of a certain kind of item for a given area (city or base wide), this would also mean you can't stack up on the same item and walk around with like 300+ rounds of 556 just from one base.
As others have mentioned, the south feels a bit empty at times, perhaps it's the giant forest or the fact that everything seems to be more or less laid out in horizontal strips, but it doesn't feel as "organic" as Chernarus. Some more dynamic loot or mini bases/camps/roadblocks would definitely improve on this.
Some buildings don't contain much loot at all, despite being quite large (the large barracks from Arma 3), while others are relatively small but contain quite a lot of loot. It's almost as if every building is hard limited to like 2-5 items.
Many items still don't have logical inventory sizes (how much space they take up) or even weights, the biggest offenders being guns, many of which have folding buttstocks and should be smaller (but larger if equipped with non-folding stock), even others seem to be solely based on how they look from the side, not their actual dimensions (Amphibia is quite thin but somhow takes up more room than an FNX-45)
Overal this update was definitely good and you shouldn't take the above points as "negatives" perse, but more as points of improvement and refinement.
PS: Can we pretty please fit more fishing hooks on the boonie hat? 😛
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