As I said in the Dragonlance thread - having Backgrounds carry a Feat with them by default would break mathematical compatibility with the current game in a way that none of the other changes they have made so far do. So I hope that these experiments are being kept to optional books and setting specific Backgrounds and not something they're thinking of putting into the Anniversary Edition.
The one way I could see this work mechanically is if they allow you to swap your +2 ASI at 1st level for a Feat, and you have to do that to take any Background with a Feat attached. Which I think would be a good idea to be honest, so I could see how they could make this mechanically compatible with the current edition if they do it that way.