MOTUC Orko definitely!!! Although, I do like the size of the vintage Orko(even if he wasn't in scale with the rest of the line). I feel the 2002 Orko is tied with Zodak & The Sorceress for worst "updated" design. He wins if you include his MYP voice.
Taken out of context, Orko looks like he's wearing blackface.
I agree. If they wanted to release him as a separate character ala Zodak, that's fine. Imo, Orko is supposed to be small & cute whereas the 2002 version is long, hunched over, and creepy looking.