The fact that you say TES will die off because its "core fan base" will leave makes you come across as an ignorant elitist. The truth is that Skyrim has received overwhelmingly positive feedback, aside from your so-called "core fan base". It just goes to show that TES is faaaaaar away from "dying off" and is actually increasing in popularity.
You want proof? I can either refer you to its Metacritic critic and user scores, its 3,522,223 sales worldwide, or the (literally) 100% of my friends, who own Skyrim, saying it is either amazing or the best game they've ever played.
Oh yeah, constructive criticism is nice (the game isn't perfect) but just spewing nonsense about how TES is "dumbed down nonsense compared to Morrowind" takes our community down a notch.
First off, it's not elitism. Every game has a core fan base whether you know it or not. The core fan base are those who support the game and give their honest opinions of what works and what doesn't. The core fan base actually takes the time to post on the forums and wants to give ideas on how to make the game better.
Sales only tells you how many people buy the game. It doesn't tell you how many people turn it back in, how many people play it and will never play it again nor another TES game again. It doesn't tell you whether the person actually likes RPG's, as this game was targeted for those that don't.
There has been plenty of constructive critisim and they have been called whiners and worse. They have been berated for giving and honest opinion. THAT takes the community down a couple of notches, not giving an opinion of how you think the game is.