Even now, there are quite a few mods I would really appreciate on the Xbox One. Particularly ones relating to settlement building.
Definitely can't wait for the Creation Kit and Console Mods to release!
One mod I would really love for consoles, but I highly doubt it will be accepted by Bethesda, is the ability to utilise the console commands.
Either in an openable menu system, or by simply letting me plug in a keyboard (or even use the awkward on-screen keyboard) and enter codes manually.