There are tons of classics that could be redone.
Gunga Din comes to mind, The Man who would be King..
The stuff they recycle now is twaddle
https://www.youtube.com/watch?v=SxRNrb68E74
Modern audiences and the Academy have no use for white male heteronormative imperialist tales.
Hollywood doesn't have to redo anything. The problem is, there is a dearth of both originality and creativity, as well as a disregard for what heartland America wants to see.
I would love to see a George Washington trilogy - each movie based on his early years, during the American Revolution, and his Presidency and last days. But Hollywood doesn't have the guts to do it, because they hate middle America.