wall thickness vs strength of part
After sing a document like this http://my3dmatter.com/influence-infill-layer-height-pattern/ it would be very nice for 3D hubs to maybe duplicate results and/or also have the comparison of infill vs wall thickness. This would allow for customers to make the most informed decisions and would also be nice for the hub owners to recommend different configurations.
Joel Newman commented
Essentially reporducing http://my3dmatter.com/shells-matter-more-than-meets-the-eye/ data in a very clear and easy to understand way that 3D hubs has done well with in the past