Being able to sort runes in the forge and checklist by Core/Extended? Makes it easier to forge based on cost and see what you might get in packs.
Well… the core is the release set all the way up to and including Grimlic's Descent The extended set is everything else from Path of Conquest up to but not including the latest expansion. Overall, not a bad idea though I guess, it could be easier to track for forging, though for packs, the only thing I'm not 100% sure of are which legendaries will pop up.
