I would like to see a new exchange system implemented whereby every upgrade material is available for purchase and we use other materials as the currency for exchange. This would give us something to use all of our excess materials on as well as add another way to obtain harder to come by materials. It appears the older system of exchanging materials for marks/rep isn't going to be brought back so I believe this is a fair compromise. This new system would go against the grind so it's not likely to be implemented but I do think it would be a welcome change that would at least make the grind a little easier to cope with.