Hmm what I like to see in the future is having the option to.
-Befriend npcs or maybe giving gifts, till such time they give you something back like a reward or something. maybe," buy" yourself a wife/husband lol and make/adopt children(regardless of getting married to a player).
-Random encounters like couriers handing out letters giving random quick missions with rewarding rewards.
-Having dual player emotes that requests the other player to do something together.
-The ability to ride with someone who has a faster mount
-The option to set your house as a background for character selection where you set them into sitting standing etc. while doing their thing as you choose from them
-Seeing your other characters roaming around your house.
-Spell crafting (pls zos we've been waiting)
-Since Battleground is gonna be free for all, why not put a tournament 1v1 mode, where other players can also spectate per tournament session. (players doing open tournament sometimes have a** holes running around the duelists ruining the view.)
-GvGvG BG thats something nice.
-Master and apprentice system, where the master assigns a skill mentoring the student with faster skill exp, and 10% exp boost while partying together.
-An interface for cyrodil where you can view all active groups to request to join, because sometimes. most players too shy to ask for lfg(mostly solo players)
-Mentoring points maybe? different from m&a, idk where you get rewards for helping players which increase to a certain threshold where you gain rewards. Eliminates META elitist from doing trials (choosing only experienced and max geared players). makes newer players to trial/end game content more welcoming.
These things are more like of keeping you busy at other stuff rather than just grinding and grinding and grinding and grinding and grinding end game.