Unarmed skill line: I think everyone who played in skyrim built a brawler, took the enchantment from the gloves of the pugulist, heavy armor perk for melee damage, etc. etc. I would love this to be in ESO.
Dueling: Self explanatory, sometimes its just fun to have a brawl with your guildees or friends.
Repositioning: This one is kinda specific to roleplayers I suppose, but the fact that we cannot turn in place or backpedal, just bugs me. Along with the fact that if you hit virtually any key while performing an action, your char comes out of that action....I am sitting, I check my friends list...I am standing....
Style: So far we do have armor styles and weapon styles based on races, but the color thing is a little...odd... something like armor dyes would be nice, when my nightblade was in the orichalc level of equipment her armor was dark, gothic looking, very apropriate for the vampire she is, but then when i moved on to dwarven metal....it became like a lime green.... If no dyes, maybe some way to let us choose from the color schemes available for the armor styles at different levels.