Beyoncé doing the "***Flawless" remix with Nicki Minaj as part of the tribute would lower the quality of the performance. It's equivalent to when Beyoncé does a song with Jay Z. Her unattractive, unfaithful, leech of a husband always brings down the quality of her songs and performances. Beyoncé just needs to do the entire tribute herself and maybe bring Michelle and Kelly on the stage for a quick reunion. Let trash like Nicki Minaj perform with her own kind, like Ariana Grande and Iggy Azalea. Keep her out the Vanguard Tribute.
...Vin