When working in C4R, allow users the ability to place materials in a commonly accessible location to the C4R project. When Multiple Architecture firms are working on C4R, there is NO good solution to deal with materials and material maps. It would be nice if you could place a material library and associated jpegs and pngs on the C4R site so you don't need to constantly remap them.
Setting up a local folder on every users workstation would be a nightmare considering the number of people that can end up working on a project. Sometimes they only spend a day, sometimes a week, sometimes years. As the industry moves more towards the cloud and more collaboration and Real Time VR/AR, this is a must. I like the C4R product, but this is a big downfall.