I would like to see full customization for controls and UI on the consoles patched in. Final Fantasy XIV has this, so why not The Elder Scrolls Online?
The background reason for not having custom button mapping has got something to with the multiple combinations of button presses that do something, and the fact that resetting something may unset something else inadvertently and players may not notice.
I believe ZOS are open to adding more control scheme templates though, so if you give some specifics on what you don't like, they may be able to come up with something.
The major concerns I have seen so far are Weapon Swap, Sprint, and Southpaw options.
I have a suggestion that I would like feedback on, as I don't know how viable it would be due to not playing ESO on console, but I have played Skyrim and Oblivion on Xbox 360. The essence of the suggestion is to free up the face buttons for other options by putting the skills on combos with RB / R1.
Skill 1 -> RB / R1 + X / Square
Skill 2 -> RB / R1 + Y / Triangle
Skill 3 -> RB / R1 + B / Circle
Skill 4 -> RB / R1 + A / X
Skill 5 -> RB / R1 + LB / L1
Ultimate -> RB / R1 + LS / L3 + RS / R3
Sprint -> LB / L1
Weapon Swap/Sheathe -> X / Square
Sneak -> LS / L3
1st/3rd Person -> RS / R3
Jump -> Y / Triangle
Dodge -> LT / L2 + Y / Triangle
Synergy -> B / Circle
Mount -> D-pad Down
D-pad Left now has nothing assigned to it, so I'm open to suggestions on that one. Maybe reverse quest cycle. Everything else would remain as it is.