This is always fun, so let me give it a try as well
Elizabeth Debicki (surely a shoe-in when The Crown starts)
Maggie Gyllenhaal (never had a cover before, her directorial debut will premiere in December and is getting quite some Oscar buzz)
Kristen Stewart (around Oscar season)
Rihanna (surely we will get that album next year. Right? Right?)
Lupita Nyong'o (Vogue favourite + Black Panther)
Michaela Coel (fingers crossed for this one, she stars in Black Panther as well and has so much buzz, maybe a double cover?)
Symone (we need a drag cover and she would be perfection!!)
Carey Mulligan (has She Said incoming next year, which will surely get a lot of buzz and a Vogue favourite)
Gigi Hadid (she is always a safe bet, and I could see a story around the things that are happening with Zayn right now)
Jennifer Lawrence (the big comeback cover?)
Anya Taylor Joy (surely this is bound to happen, there is a lot of buzz around her and she has quite a few projects for 2022)
Cate Blanchett (why not?)
Viola Davis (has to happen one day, and could have quite a change with her portrayal of Michelle Obama)
Charli XCX (random, can't see it happening but maybe Anna wants to be "cool with the kids", as she has her album coming out next year)
Lizzo (also new album out next year)