I think with the respecs comin it would be appropiante to add Imbued shard transferring:
Take a blank Greensteal item/weapon and a imbued item/weapon and put it in the last alter with a high power cell and click forge, having the imbued item/weapon acting as a supreme shard with low, med and high on it.
This way they stay bound but you dont lose all that hard work if you want to switch item/weapon types.
Yeah you lose the Greensteal item/weapon but thats not ner as hard to get back.
P.S. and maybe add the ability to change low, med tiers.