-Unarmed/Hand-to-Hand
Bring it back so people can play without weapons if they wish. I liked the fists of steel perk and the khajit claws, but we need an unarmed skill.
-Acrobatics/Athletics
Roll them into one skill mixing running, sprinting, jumping, dodging, and CLIMBING!
-Spellcrafting
We need this back. We really do. Magic is supposed to be unique to everyone, but without Spellcrafting, it's generic.
Skills from previous games, that imho should have been in Skyrim, and need to be in TES VI.