Extraordinary ideas have to backed up with extraordinary imagery or hidden in shadow (so the mind can really work on it).

You can't hide things in shadows in the middle of a double sun lit desert.

You could argue that the digestive part of the Sarlacc is hidden under the sand and open to the imagination but we get a very clear view of the toothy front part which isn't very scary.

I dare say you could walk away from it with ease.

The characters have position themselves to be endangered by it.

It's like Bela Lugosi and the rubber octopus.

If Jabba just wanted to kill them he would have stayed at home or just sent the people there.

He is doing this for kicks.

He's a sick bloated space sultan.