As far as I go, Oblivion impressed me greatly. I loved that there were dungeons and caves and ruins everywhere, and I loved how large the world was. Being able to see far didn't make it seem small to me. Instead, I thought "wow this looks amazing, I can really see
that far?"
With Skyrim I was hoping there would be a lot of huge white snowy planes with basically nothing on them, just snow as far as the eye can stretch and the occasional tree or boulder, and mountains so high that they dwarf the Oblivion "mountains", but we can′t all have what we want, Bethesda needs to make sells and to do that they need to target a more mainstream audience, not easy to offer quality to the fan-base when there is a credit crunch and the fan-base is smaller than the mainstream audience, hard enough on the company as it is.
Okay first you make an assumption (that Skyrim would have any reason to be a lot of huge white snowy planes despite the fact there is an entire continent further to the North), then you try to label this the opinion of the "fan-base" and try to say that they won't do this due to the "main stream."
Half the reason Skyrim is colder in many/most places is due to the mountains. Why would there be tons of barren snowy plains? I've noticed this. Most of the time people try to play the "fans want this" or "oh no the casuals/mainstream ruin everything" card it amounts to "I want this so I'm going to make up stuff to make Bethesda seem bad for not doing what I want." It's one thing to have an opinion or things you look forward to in the game. It's another to try and demand the world's design fit your preconceived notions and insult Bethesda and players both if things don't go the way you personally want them to.