The only feedback I have for improvement is just that pictures on the website didn't match the description. Like way off. For example it showed a brake caliper when the description was for a radiator hose. Now I get it, with hundred of thousands of parts it's probably not feasible or necessary to have photos of everything but I found the obvious disparate photos very distracting. In those cases just use a 'no photo' symbol or something like that.
Overall I'm very, very happy with price, availability, selections, etc. I will definitely be shopping again!!!!