It would just to get Obama back in the WH breh. Obviously she'd be a proxy
Use her for marketing/campaign reasons and pay her well without her actually running. She’s likeable and one of the only former First Ladies who people didn’t hate after their husbands left office.
Give her whatever she wants and turn her into the next Oprah when it comes to media — because she’d totally go for that. The big liberal donors with media interests would back her in a second.