So what if it's ugly, You going to march down to Ken Sugimori's office and teach him how to draw cute things?No pokemon is this ugly.
Not even Dialga.
Here's my opinion in blurbs:
Smugleaf2: a bit similar.
Smugleaf3: Pretty cool.
Wotter2: Bit dark, but otherwise lovable.
Wotter3: Cool. Doesn't resemble Wotter much. but if you look at Feebas and Milotic that's not really an issue.
Piggo2: That's just adorable. You can't hate on that.
Piggo3: Bit too much flame, and looks like Rhyperior and Magmortar put through the dryer, But it's believable.