Hopefully this random post on the forum gets some attention from the game designers.
I'd love to get a new source for riven transmuters. When I was actively doing Eidolon content these seemed plentiful but now that I have advanced further in the game I am finding that I'm quickly running out. I believe these only drop from a Hydrolyst capture in PoE. It would be convenient for Palladino to sell these for riven slivers or The Quills to sell for standing.