Rebecca Ferguson? Not sure if she ever does appearances, but I'm doing a big Mission: Impossible binge. She's got the next M:I out soon, and Dune Part 2. Any faces from either franchise would be great. They're both loaded with talent.
Other suggestions for M:I - Emilio Estevez (it was great having his dad and brother present a few summers ago), Thandiwe Newton, Michelle Monaghan, Aaron Paul, Josh Holloway, Ving Rhames, Simon Pegg, Lea Seydoux, Vanessa Kirby, Henry Cavill, Henry Cavill's moustache.
Dune: Well, Florence Pugh is probably absurdly in demand, but a man can dream! Dave Bautista, David Dastmalchian, Stellan Skarsgard, Tim Blake Nelson, Jason Momoa has obviously done a couple before. I could go on but will stop.