I’d happily watch some clips of all of your suggestions. But I don’t think it’s a great idea in reality. There’s a lot more to acting that just having a specific appearance. Watching Humphery Bogart’s take on the character of Indiana Jones would be awesome, but watching his face deepfaked over Harrison Ford would be meh, and watching a team of graphic artists attempt to recreate what they think would be an interesting Bogart performance might work, but also might be dull, or unimaginative.

What they’d probably need to do, is hire an actor to create the performance then cover his face up with cgi. In which case, I’d rather just watch the actual actor.

But a future where it’s easy for fans to create mash ups and fan fiction episodes sounds fun. And I’d happily watch those for fun.