Focus on getting to the good stuff. It will be harder to get there, because doing the story missions is what gets you the loot and power to reach those points, but that's also what makes it a good game. The challenge is how to optimize what you find to be able to face the challenges like you want to. If you want to rush to the good stuff, you can, but it might be harder, and that's what you want, right?
The thing about Inquisition is that it's very unbalanced. Not in a very bad way, but not in a good way either. Crafting becomes better towards the end of the game, because that's when you have more time to yourself and you've already gathered a lot of materials by then. The crafting feature is hardly used in the beginning to middle of the game because of the RNG Loot System, and only through that system can you acquire something at least decent. If I rush, I am punished, but if I take my time, I may get bored of the tedious quests. Number one thing to do in RPGs is to level up, and because of the level scaling system you are forced to level up to the required levels recommended for that location or mission. If I rush to the good stuff, the story would be almost over already, because Inquisition's main story missions(If excluding missions that lead up to the main missions, you are left with: Closing the Breach(First mission right after Intro), Addressing Chantry in Val Royeaux, Champions of the Just/In Hushed Whispers, In Your Heart Shall Burn, Wicked Eyes and Wicked Hearts, Here Lies the Abyss, What Pride Had Wrought, and Doom Upon All the World)are only about 8, and if you exclude Addressing the Chantry in Val Royeaux and Doom Upon All the World, because they are the shortest missions within the main story, the game is actually very short.
While what you're saying is true, the concept in the video that was causing trouble was one that was too big for that part of the game. With so much stuff still being processed from exposition, it was a bit of a waste to put it all the fun tension in one place, if it helps to look at it like that. You get to enjoy the suspense and the impact and the fun that makes you want more, but for a longer period of time without burning out and hating the game because you chose the wrong line of dialogue or didn't have the right staff equipped. There's enough there for the game to be really immersive, and sometimes it's better to break the immersion with a pause here and there.
While I will agree to an extent that it may have been too soon, first playthroughs are always the test runs and you're never going to make all of the right decisions you wanted to make. That is why there is a second playthrough for most players who wish to alter their choices or make new ones they may have missed. The lack of no New Game+ really does hurt its replay value, because "no one" wants to go through that RNG Loot System several times along with character creation especially if you want to play your previous Inquisitor. In In Your Heart Shall Burn, you are given a timer to save the Haven townspeople and whether you know it or not, you can easily fail in saving them as it is pushed onto you too suddenly. Adan and Minaeve are the two townspeople that die the fastest because you must rescue them within a very, very short time frame upon triggering their imminent death if you don't save them. In Champions of the Just, you are timed as well and thanks to the buggy doors you can screw up big time. It is a very intense, although confined, section of the mission, and Ser Barris will survive depending on how careful you are. The game is already throwing intense sections at you already, and I don't think this Crestwood section would hurt because you are seeing an entire battlefield(which would look amazing)and you have a larger amount of ground to cover. As long as there are missions that lead up to that demo mission, the players should be prepared for what they are about to face.