I don't see the pips as being unillustrated.
They are not pictorial, like the RWS, but that's really very limiting.
They tie the cards too closely to an act or an action or too a scene.
The Thoth pips are illustrated in a different way.
I find it a lot more interesting.
It gives more freedom for interpretation.
It's like each card has a mood, or a feeling.
The two cups is a very different card from the 8 cups.
I don't know how people can look at these and say they are not illustrated, just because they don't have people in them.
Anyhow, just my opinion.
You all know I love this deck