The original was terrible, and I think I know why. Mel Brooks understood Westerns, horror films, Hitchcock thrillers and historical epics - that's why he was able to satirize them successfully with Blazing Saddles, Young Frankenstein, High Anxiety and History of the World - he took our expectations and subverted them. He didn't understand Star Wars at all, and because of that, his satire was too broad and unfocused. Like "Pizza Face" and "Barf" just had nothing to do with anything, so they came off as lame gross-outs. The space camper had no tie-in to anything either - it was just a random vehicle switch. There was room for funny Jewish jokes about the princess and Yoda, but because he didn't tie them back in any way to the actual Star Wars characters (i.e., by goofing on the way Yoda speaks instead of just his appearance), they just sat there. It failed massively, especially when you consider that (most of) the rest of his work is some of the best comedy we have ever seen.