Obor is in Osrs
Having the Giant Key ingame already, I think Obor being implemented into the game would be great for low-level ironman at a chance at getting rune weapons & armour along with the hill giant club, making it just like the barrelchest mini-quest to obtain a chance at the hill giant club. Also having the Hill Giant Club a annouced drop on Yell. i think this would be a great experience as said before Low-Level ironman !
Thanks for having time to read my suggestion :)