I did this after looking at this picture I founded at Google. [link]
Here were the original designs of some of the characters they had originally planned to use for them before they changed them to their final design that they are now.
Mr. Quiet still had the same body shape like he is now, but he originally was going to be light green with a yellow nose.
Miss Helpful still looks the same. The only difference is that she had light pink hair.
Mr. Persnickety (Now Mr. Fussy) still looked the same like in Season 1, but he originally was going to had some sort of tweed plaid vest before they removed it from the final design.
So, tell me if you think they look better if they were in these designs or how they are now.