Original Rancor costume from Star Wars: Episode VI - Return of the Jedi!

Take a look at this fantastic behind-the-scenes look at the original rancor costume that was to be used in Star Wars: Episode VI - Return of the Jedi. Uploaded to Reddit by "Join_You_In_The_Sun", the original costume was designed to have a person inside of it. However, it was eventually scrapped and replaced by a miniature wireframe puppet because Dennis Muren of ILM (Industrial Light and Magic) wanted to avoid a "muppet look". Although this costume looks pretty cool I think they made the right choice here. The route they went with looks a lot scarier than this costume would have. What do you think about this costume and their choice not to use it?

Source: Reddit