You can do that. But you then can't pretend that nothing happened. It literally is not the same.Exactly. There's a reason Julie Andrews isn't starring in the new MARY POPPINS movie, even though it's apparently a direct sequel to the original movie and not a reboot.
No actor owns a role forever. Someday another actor will play Picard. That's just how it works.
This whole discussion is getting really absurd. Like it would be completely immaterial who plays the roles, the actors having no impact at all.