Yup, found the part in JP Wiki that explains what those are now. Apparently tier3 of those quests will already be at ragnarok difficulty, while tier4 of those quests will be much harder than rag even. Saw some videos too, certainly looks... challenging...
And they're introducing them during an Union Event... RIP Grails, lol.
Didn't see what those accessories do though specifically, maybe sanahtlig knows?
Edit: actually found all that info on the jp wiki now... holy shit, the stats on those accessories...![]()