Everything in Nature evolves for a reason.While our own structure isn't perfect,there are obvious traits which have been retained and refined. There is no fossil or living hominid that has a femur as large in relation to the tibia as this Neanderthal model. Was it just convenient in piecing together this specimen? If not and it was intentionally presented this way, what would be the evolutionary advantage? It would be interesting to find a complete Neanderthal skeleton and I hold out hope that this happens.
Everything in Nature evolves for a reason. Not always. Why do we have earlobes? There's no reason for them. They just appeared, and weren't fatal, so they're still with us. Same with eye color, hair texture, fingerprints, and probably lots of other inconsequential items. We've inherited a lot of stuff. Sometimes it's really advantageous, and that will tend to show up more and more in future generations, but sometimes it's just meaningless baggage.