I just got off the LGA-ORD DL Shuttle with empty seats in F (fourth LGA/ORD/LGA flight this year with empty F seats). I asked at the gate in LGA about upgrades for MVPG and the two agents there had no idea that anything was even in the works. They offered to sell me an upgrade for $75. The plus for the evening, though, was that beer and wine were free on the DL Shuttle flight.