Pete should probably give the convention keynote speech.
I agree! He's a very talented speaker. And he should be given a major cabinet position since the vice presidential will most likely be filled with a woman (Harris, Klobuchar, Demings or Barragan would be great). I like the idea of UN Ambassador, since that would raise his international profile and add foreign policy credentials to his list. Probably a safe bet now that he'll be part of the administration if Joe Biden is president next January. Beto could also be tapped for something like Commerce or Energy.
UN Ambassador is good, HUD is another option. I want the big positions (state, treasury, defense) to be filled in by well-respected experts in their fields. Hillary Clinton should be SoS again.
I would love Hillary as SOS again, but she and Biden had bad blood towards each other during the Obama administration.
