I’d like to second the photography comments above. Also some good lifestyle shots would go a long way.
To be honest, none of the designs really “inspire” me to pursue a purchase at $170. I would take the opportunity to really design some unique looking shoes that take advantage of 3D printing - Design details that you wouldn’t be able to get otherwise. If the shoes were more surface/texture rich and there was a better transition between the “outsole” and upper I would be all in for a pair.
I would love to see designs built for “casual” vs “Outdoor” as well as some unique themed offerings. Why not print a shoe that looks like something completely different?
The customization is the ticket here - Building a nice custom builder is going to bring it home for the user experience.
The shoe is a blank canvas - Play that up!