> I thought it was interesting that once it dialectized the Hacker/Pig Latin into Moron and then Swedish Chef, it hardly changed after that. I find that interesting. Is it because the language broke down enough that it doesn't translate gibberish?

That's exactly it. The redneck, jive, and cockney ones, are all looking for English syllables to mangle, like "ing" and "less" and "each" and "ound." They also look for a lot of complete words, too. So once you hit the ones that mangle everything in sight, you won't get much more out of those.