Actually I would love to see the ability to break higher grade crystals into lower... say a Cluster -> 10 crystals; 1 crystal -> 10 shards (or whatever exchange rate). Same with Darkmatter and carbonized matter. The prices are similar enough, I should be able to buy a few of the highest grade to save inventory space and use what I need, when I need it. Alternatively, just have repairing cost 5 basic darkmatter instead of a single G5 darkmatter.