The perfect TES game? That isn't Morrowind?

Well, let's see...
I would like better hair styles. I know this is a minor issue, but what does Bethesda have against bangs? I would also like to be able to change hairstyles. If I'm going adventuring, then a pony tail is fine but if I'm dressed up, I'd like a nicer style.
I would like to see somewhere that doesn't look so.... Europe/North America. I get why Skyrim looked like that, but as I recall, Cyrodiil was described as jungle. I did not see any jungles. Besides, there are so many Western styled games. There's so much more to draw inspiration from! Or create! That was one thing I loved about Morrowind. It was so new.
As for housing, I liked being able to buy them and customize certain rooms. To expand on that, there could be a "decorating mode" that pops up as an option when you enter the home or you can click on a specific piece of furniture. In the decorating mode, you can rearrange the furniture, get rid of things, or put in new items. There could be an option for the display cases so you don't knock things out of them accidentally -_-
Keeping with the Hearthfire theme, if you buy a plot of land, I think that should be fully customized as well. If I have space for (and can afford) a house with ten bedrooms, then that's what I want. The building of the house can have a "build mode" option where you place the foundation on your land. It can show the borders and once you pick it, you're stuck with it. Then you do the normal building like in Hearthfire. Then any additions to the home has to fit properly or you can add a story. Maybe you can eventually have fencing or another house, like the strongholds in Morrowind.
The seasons should change somewhat. Instead of rain at random, a rainy season. And people would likely be indoors during the rainy season. Maybe inns would be booked. Bandit caves would have them all inside. Same with snow or wind or extreme heat.
Holidays too. We have a calendar system, so why not? And some could be more culture-specific. So maybe the Dark Elves are celebrating something while everyone else just goes along with their daily lives.
If children are going to stay, I'd like to see children of other races, not just human kids. And I would be very happy to see an interracial family every so often.
If marriage is going to be an option, then I would like the marriage pool to open up. There were no Khajiit or Bosmers! And literally no one in the Thieves Guild? I would also like it to mean something. It just seemed so...blah in Skyrim. Maybe your marriage has certain effects based on who you marry. If you marry a beggar or someone with high status, it affects how people treat you. And your spouse has certain standards. How will the react if they find out you're a part of the Thieves Guild? Or the Fighters Guild? If you never have any money? If you're a warrior or not?
If you have pets of any kind, I agree with the tell them to wait function. I felt so bad when my pet scrib got killed

Animals should run away from certain fights. People should too. In Skyrim, they say they give up but they just keep going. It's like, they just saw me kill a dragon and now they want to fight me? For real?
I liked in Morrowind how certain factions didn't like each other and others were close knit.
That's everything I can think of for now