Can we just remove shards from the game?

[StouterTaru]

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.

You can use higher level dark and carbon than is needed. I just buy grade 5 dark from the NPC, and use it for any gear I repair. When I'm low on carbon matter, I send my minebot retainers out for 30 grade 3 each. There's no reason to take up inventory space for grade 1/2 when it costs the same as grade 3.