How about some love for armor in DnD Next/5e?
Armor Specialization
You’re just better at the armor you wear. Gain the following benefits:
- Increase your strength, dexterity, or constitution score by 1, to a maximum of 20.
- Increase the bonus you get from any worn armor by 2.
Thoughts?
Throat Punch Games 
Flat bonuses are largely done away with in 5th edition, especially in feats. This feat is too powerful and would quickly become a feat tax.
I wonder. I don’t think every character would take it as some characters don’t care that much about AC. Some of the other abilities give your character powerful add-ons.