I was going to say Powered Power Armor but seeing the gameplay video shows that it is alredy in
But the other mods that I want the features to be in FO4 is:
Robco Certified (http://www.nexusmods.com/newvegas/mods/43331) (allows you to make robots and cyber creatures in game)
Imps More Complex Needs (http://www.nexusmods.com/newvegas/mods/37254/?) (makes food and consumables much more detailed that puts calorie, protein and fat intake, alcohol and stimulant intake rather than just fullness.