First person viewpoint

What change would make you want to buy the game?

Nothing. Everything Zeni is doing is amazing

• Fix the artwork direction to resemble TES (lived-in, slightly gritty, aging architecture, realistic limb and weapons proportions, etc.) and remove the overly shiny/bright current look
  
• First person default viewpoint (combat and interactions look appropriate)
  
• If no active combat, at least provide auto-targetting as found in Tabula Rasa or AoC (no tab-targeting default)
  
• Make all weapons multi-hit (you hit everything in front of you when you swing your weapon)

That would at least make it somewhat more like TES... and not simply a label slapped on a standard MMO. A lot of the other ideas they are already playing with (lack of aggro mechanic, quest system that doesn't require quest hubs, etc.) will also help... but if they don't at least implement the 4 things above, it won't seem much like playing a TES title at all.

First person and free attack. The rest is fine, I don't mind an art-style like morrowind's.

This.
Also some colour correction to make it less cartoony.

- First person view

- No classes

- No lvls

- All cities, forts and such capturable

- No hotbar sh*t, free attack like booheads said

- No factions

I will list only things that are possible in an already advanced state of work.

-Free to join non compulsory non racial factions
-No classes (of course if is not skill based at all but made out of unlockble powers they are screwed)
-Skills increases with use instead of a xp/level system
-Remove istances, Public dungeons should be the only kind of dungeons

this wouldn't make what people expect from TES, but at list it would make a MMO worth a little bit of consideration.