ESO is obviously going down the route of controller support. I have two suggestions:

1.

Big Picture has a feature, "Daisywheel" - it allows for a great way to type with just a controller. Sure it's not as fast as using a keyboard, but I will be able to log in from my couch without having to get up and go to my computer like the lazy fool I am.

Please integrate daisywheel or even create your own version of it.

http://www.hardmode.org/wp-content/uploads/2012/09/steambigpicture002.jpg

2.

Remove the splash. I don't like it when "fully controller supported" games require me to use my mouse on a splash at pre-launch. This automatically makes the game not fully controller supported in my eyes. Merely partially supported. I'm looking at you, skyrim, saints row, assassins creed, etc. etc.