What I meant is that stop-motion is not taking fully advantage of the actors. When we get a name worthy cast like this, it takes away a lot when they're reduced to voices only.
The impressive cast tends to be less impressive.
I'm not kicking voice actors in the stomachs, they do a fine job.
But these actors are usually live action actors.
And if I have to choose between them only doing remarkable voice acting
VS
them do remarkable physical acting onscreen and and the same time using their voices.
Then the choice is easy.
You see, it won't be a silent film just because it's live action. They still use their voices. We still hear them do voice acting, but they're also physically appearing in the film.