I think part of the design issue on Nemesis is the original had no nose. Didn’t even have room for a nose as the lack of the lips went just beneath his eyes. He is also missing scars and staples from the original design. The original looked like a pieced together Frankenstein’s monster where the new one looks like someone stretched his skin too tight. The original also appears to have a more compact skull in most pictures, giving it a more primitive Neanderthal look.
It’s not a terrible design on the new one, just some glaring differences when compared to the old.