Hongmoon Gem Powder and Shimmering Scale Fragment are both usefull, but the amount is questionable, but at least it keep gem powder available in Marketplace. And no I don't think I want free Gilded Square Gems.
My issues are with those Skystealer Crystals, we got 12 Daily Dash fields populated with those, while they flooding my bank. I would wish some better stuff.
"Evolved Stone - Only used to make Sacred Oils to sell"
this is a good one, unless they keep adding events like the last one.
personaly I'd like to see some stuff like upgradeable HM Gems, for all those who are not happy with the free Gilded Square ones....