I don't believe it's nostalgia... I actually believe it's simply a set standard players particularly like... and that's usually endemic of their first ES experience. I mean, when you make a home-cooked meal, how often do you change it from your base fundamental recipe? It's kinda like the running theory in the TV series Doctor Who... that show has been on since 1963... so every viewer tends to have a different actor who played the Doctor, and almost all of them tend to sight their favorite Doctor being their first one they saw, and state it should go back towards that particular Doctor's style.
Sounds like nostalgia to me.
I can certainly se why morrowind players get frustrated when beth takes away something that maid the game so greate. But their should be more embracing of skyrims new elements imo.