Of course that's possible. But as I've said from the beginning, the MCU releases generally take the approach of happening in the modern day (relative to their release). That's not exact, but generally the films/TV shows occur within about 6 months of the release date, or very close to the release date (like the first Iron Man). Sometimes there are exceptions, of course, but generally they do seem to be aiming for something close to current time with most releases (barring the Captain America/Agent Carter stuff set in the 1940's).
Generally speaking, I agree with you and this makes the most sense. The first two films, Hulk and Iron Man, though, seem to have been moved up the timeline so that they occur closer to the other movies.
The only instance of that is Iron Man 2, and the reasoning for it has been explained ad nauseam. Either we can take the "six months later" thing as valid and place IM2, Thor, and Incredible Hulk all in 2009, and Avengers in 2010, and every other movie/TV show after would have to be moved up two years... which creates FAR more continuity problems than it solves.
At this point the only reason I keep bringing it up is because you seem to be misunderstanding the point I'm trying to make. The only major placement I'm questioning here is the original Iron Man. I think you are correct in every other placement, give or take a couple of months. If you want to place Iron Man in 2008 based on the filming date, release date, and a couple of props, fine.
I'm saying there are two direct references to the first movie that indicate that far less time has passed than three years. Again, not questioning the placement of the bundle of sequels in 2011. That's solid. If you want to stick with the 2008 prop date, fine. But please stop bringing up the sequels, because I'm not suggesting they be moved.
If Fury's Big Week hadn't retconned the Iron Man 2, Thor, and Incredible Hulk all happening so close to each other, this wouldn't even be an issue.
I think you'd still run into it since Thor and Iron Man 2 obviously have some overlap, and there are direct references to how much time has passed since Thor in both the Avengers and Dark World.
TC