I've always felt 4E was much more like BECMI than 1E,2E,3E, perhaps excluding the "dominion" portion of the companion rules. Few people actually played BECMI enough..most people "graduated" to 1E if they played BECMI at all. A lot of the snarky criticism of 4E could be applied to BECMI, and if memory serves, I heard a lot of the same condescension from 1E players/DMs when they heard I played BECMI. It wasn't widespread, because it was limited to people at school or the FLGS, we didn't have the internet back then, but I think its safe to say BECMI was less popular than 1E/2E.
How do you think the Elf class would fly nowadays?
I like the guy who said something about the engine versus the user interface. It may be an apt analogy. 3e did streamline the math. It did organize it so that martial things applied to all martial classes. It also did the same for magic in many ways. It became far more systematic. But the play experience especially if you weren't trying from day one to screw with the system, was very similar. 4e though completely changed the play experience and for me it did it for the worse.
I think the things you mentioned were positive changes to the game - but you are right that mechanically 4th ed was a big change from previous editions. The biggest mechanical thing thing is how up front the mechanics are. Things like encounter powers, second wind and healing surges are very prominent in how the game is played, and while I think they can be used creatively, I do understand how some players find the mechanics intrusive.
I have to say when I first saw 4th ed and played it, I had a lot of reservations given that I played 3rd ed for a considerable time. But I started to embrace the mechanics of powers etc and now it is my favorite edition by a large margin and I dont know that I can go back to a system where some classes have significantly more power than others, where there is not self healing, were utility powers are not siloed from attacking powers, etc.