I'm curious to see who will replace him - as are most F1 fans of course
My guess is that it won't be much of a specifically interesting name, just someone from the current grid, but it'd be awesome to see one of the Ferrari Driver Academy drivers take the seat. I know it most likely won't happen, but it'd be cool. Arthur Leclerc shows promise, but is too inexperienced for now, all of Giuliano Alesi's wins came in sprint races where he started 2nd or 3rd due to the top-8 of the feature races being reversed. Marcus Armstrong was impressive in F3, until suddenly teammate Mick Schumacher got a magic car and beat out everyone in the second half.
Enzo Fittipaldi has the talent, but not yet the experience. Callum Ilott is absolutely growing year after year and deserves to be in F1 at some point or another and the same goes for Robert Shwartzman, but I don't see a strong team promote someone straight from something below F2/GP2/F3000 to F1 except for a very, very special level of talents. Mick Schumacher at least has the name and sometimes the speed, but much like Luca Ghiotto he is not exactly a consistent driver.
Then again, this is all for nothing since it'll just be a current F1 driver