The golden ruins Forbidden spellgems are used to craft packs so makes sense for them to stay in. There still is some T1/T2 obsidian items out there, which is why I think they left the Malevolent Pieces in as long as they did, but they have no use to new players. For the loot from prince crates they are still dropping Trees/Braizers, no xp items out of 59 crates, don't think that is just yet.