Well, I have played until Ch9 and I think I can give now a better opinion and how I feel about the reviews.
Summarizing: A 83 MC is far too high for a game with little depth, a padded main campaign and a system that makes most decisions feel inconsequential.
I won't talk about the stealth, the combat, the bosses... as all these elements have not been developed at all and feel like an afterthought. The main mechanic of this game (traversal) is not even great. During your first hours vehicles seem the best thing, so building bridges, power stations and highways is the best option. It's a time-consuming thing as you need to move materials, so at the end it's not even that optimat considering how easily you can traverse even rocky or mountain terrain with a car. Then the game moves to the mountains, and bridges become obsolete as the zip-lines are far more good (the steep terrain in the mountain zone makes vehicles worse, so there's no real purpose to make a bridge as a new obstacle will appear soon) and don't need materials to be build. I didn't find any reason not to use leg skeleton either, as creating power stations is really easy there's nothing impeding you to be with the skeleton active most of the time. And planning routes so far seems meaningless, you can always bring 2 ladders and 2 ropes and bruteforce any terrain even for the hardest path possible.
And I don't understand how they didn't integrated most the information you can read in Interviews into the main missions, most of times you'll deliver something to an hologram that will waste your time with "I see the cargo is in good conditions" and some side stories with no depth. It feels like a wasted opportunity to pace the game better.
BTs are a really half-assed mechanic, only thing you must do to avoid them is wait until the indicator goes orange and then keep you breath. When you get the improved shackles is even less interesting. And the mandatory shooting sections show how poor is the shooting in the game, and show how bad the IA is.
I think that the game looks nice, there's a certain beauty in player cooperation and the core concepts of the world are great. Cutscenes are also really good. But the gameplay lacks more central elements, and never forced me so far to make smart decision making, ia have been doing all deliveries first try even when taking the most dangerous routes. I appreciate original ideas, but DS as original as it is has the main problems of AAA open world games: padding, repetitive quests and lack of real decision-making.