Black Feather is my top request as a SC main but I feel at this point almost everything else I want and a gigantic part of requests in this thread are jRO anniversary package, summer package, championship, tunes purchase bonuses, and event quest items, (as well as misc I feel that we need to be requesting these from the studio far more often even if it means some alternate way of purchasing (the packages originally being part of bundles of 4-5 items, some with specialty enchants and bonuses like client sprite and music mods, even if it means without the enchant and client bonuses), because we've actually got far more left of these than actual Ragcan items now.
That said also still have the remaining Ragcan gears yet to implemented (that were mostly skipped if we're talking about monthly order from as far back as mid '16 in terms of semi-relevant gears, suggested rarity via personal scale so don't quote me on it):
S: Nature Dress
Rare: Phoenix Diadem, Black Feather, Chemical Gloves, Hrodvitnir's Chain
Semi-Rare or high uncommon: Fallen Warrior/Einherjar Armor, Judgement Shoes, Water Dragon Armor, Tengu's Geta, Brynhilde Diadem, Holy Ritual Robe, Ancient Hero/Diamond Manteau, Boxing/Fist Figther Gloves
Better as Uncommon or low Semi-rare Slot: Malangdo Pirate Hat, Taurus Hat, Evil Water Beast's Scale, Fiery Mythical Beast's Feather, Menblatt Manteau, Yoichi's Shawl
Misc. that I can't really place: Hero Ring and Hero Brooch (Hero gear level reqs), Upgrade Part - Processor (Guardian in jRO, not terrible but we just got Work Cap, so it kinda outdates this)
Missing set pieces: Toy Ring (Meteor Strike), Seething Chaos Shield (2013 Elemental Tunes set combo accessory that also combos with hats from the same set), Yin-Yang Charm (requires 3 auto cast swords to combo that unless I missed it, we didn't get with our Heart Hunter Base update like jRO did)