Talking with a few crew members about this images has me thinking... is this simply underbite, mouth tension, cultural difference (I've normalized smiles with teeth because of where I grew up).

Relevant to contests/portfolios, it's best to build up images strictly along the lines that Peter has created for us. But the conversation had me thinking that having alternate images, for clients who might have different needs (even as rare as that might be) could be useful.