Very minor thing, but easy to fix, should it be considered needed.
2-3 crystals seems to be the current reward considered equivalent to ~40 shards.
Considering the drop rate from mobs is ~1 crystal per 3 shards, isn't 2 crystals from local leves a bit low?
The current transition that seems to go from shards to crystals for increased quality is currently somewhat punishing craters for making higher quality leve items (other rewards aside).