Since ESO is an MMORPG, it does not have any game-changing, overhaul addons or mods, but combining a lot of small but great changes can lead to a much better experience overall.
One of the best features it has is that it has hundreds of addons made the by the community. Bethesda made a slow entry to MMO world with their game The Elder Scrolls Online in but with constant support to the game, it has come back better than ever.
