I'd just like to see that Bethesda caters to more what the fans want, while they're already doing a splendid job, I would think that it'd be good to have feedback from the players. You can add little things you'd like to see, and general things inside the game.
My suggestions would be that-
1. Not have the game be so... cartooney. From what i've seen, it's a generally Elder Scrolls-y game with the same serious feeling. But there are things like the animations with fighting and things that are far from realistic-looking and something from a cartoon.
2. Unarmed combat. I understand not many people aren't going to use it, but what's the point of taking it out? If I were fighting something I would be at least physically able to use my fists if I were disarmed or something.
3. I'm not 100% sure if it fits with the lore, but the Dark Brotherhood. I've heard rumors about its existence in ESO, but make it a sure thing, please. One thing I'd love to see would be the fact that there could be a contract placed on a certain player, for a reason, and it would be fulfilled by Dark Brotherhood members- either NPCs or actual players. But don't make it too overpowered- only another player with alike skill and level would be able to accept the contract. It might go a bit overboard with having a group of DB members accepting the contract, so it'd be better to have a singular attacker.
4. Crime System. Just because there are other players doesn't mean that the law should be stopped from chasing down a criminal and demanding reparations for a crime.
5. Destructible cover/items/etc. I see that in sieges and whatnot, ballistas and rams can destroy doors and walls, and those falling bricks and such seem to be ragdolls, so please PLEASE allow for things like plants, trees, walls, and random misc. structures be able to have at least some damage done to them.
6. Most aren't going to like this but- less backpack space. Have an easily accessed storage in a certain city or bank, but you can't carry much on your personal self. If you can have an actual backpack, aside, can there be an actual item on your person that you can see? That'd be pretty neat.
That's all i'm going to add, feel free to post your personal suggestions and let's hope Bethesda sees this.