In Oblivion I had about 5 or 6 characters, and only played the main quest once. The problem wasn't the gameplay, it was that I had no idea what was going on. I mean, unless you already know all about the dragonfires and why Dagon is attacking in the first place, then you get lost in the story pretty quick. All I knew was "big baddy is coming to destroy the world cause he's eeeeevil, and the Emporor forsaw me stopping him". There were some books that explained it alright, but it's a videogame. I'm not going to go out of my way to read about why the bad guy is attacking, because it's a VIDEOGAME. We all just got turned into The Blades' [censored] while we ran around an entire province and they sat on their asses. If I'm basically gonna do all the work for them, I'd like to know what the cause for this whole battle is.
The story was basically everytime Akatosh destroyed the world and rebuilt it, Dagon would sort of "hide" pieces of the world and then place them back when Akatosh rebuilt it. Akatosh didn't take kindly to this so he sentenced him to an eternity in Oblivion, with redemption only possible if he goes back and destroys all that he had added to the world. That's basically what I could find on the story, but it would have helped to know that in the game so the story didn't seem so shallow.So all I want in Skyrim is just a short cinematic, where the old walls like the one in the teaser trailer show scenes between Akatosh and Alduin, and what their relationship is, why he wants to eat the world, and all that jazz. That way I can actually get excited about the main quest

I don't understand how you the player would fail to know what the Dragonfires are, as well as the more basic motivations for Dagon's attacks and other relevant background information, by the time you trek off to Kvatch. Jauffre has virtually everything the budding player needs to know, in summary form. And everything is piled upon (arguably to an extreme, as in
please quit over-emphasizing this, NPCs) from there.
If you're looking for the short and sweet "most common interpretation" of the larger and more grand things, then
1) You're robbing yourself of intricate understanding, as you will likely fail to pick up on the nuances of why that interpretation is as it is,
2) You're robbing yourself of unbiased view, as you'll likely accept that first given interpretation more readily over other interpretations,
3) You're robbing yourself of the ability to derive your own interpretation, namely robbing yourself of the experience of uncovering and piecing things together by yourself. Which, as should be noted, is
actually rewarding.The bolded text, which is the summary of the Aldudagga, we didn't even have until relatively recently. And while it was a joy to read, it would have had far less impact in reading it if the reader had no familiarity with the nuances, and had no cultured ability to make their own interpretations, as mentioned in the points above.
And how is something like the Aldudagga, or something like a steadily derived interpretation of events, supposed to be displayed in a short-and-sweet form anyway? A cinematic would do something like those absolutely no justice, as would any medium that would condense them down into effortless sound-bytes. Never mind that for the grandiose stuff, laying it all out in a short-and-sweet manner would essentially be canonizing a particular viewpoint, which is generally a bad move.
If the player wishes to understand the plot more than just the bare-bones sometimes-nonsensical basics, then they have to work for it. That's a trend that's been there for each and every game. And I doubt we're gonna see it removed for this one.