There isn't many actors that would look successful in these roles. Look at Stranger Things and see how they have the kids act... news flash, they have them acting as kids and saying dumb kid things and doing dumb/funny kid things. In this show, they are trying to make Leia out as some adultish kid... it's ridiculous. It's bad writing and horrible directing.

And Reva... it has all the potential to be a cool character, but again the writing and directing have chosen this character to be overpowered and ridiculous in dialog. It's over compensating.

I really don't think there are many actors that could pull off what the writers and directors are trying to do. It's a ridiculous sci-fi show with even more ridiculousness added to it for whatever reason.