I think that Olga Flow needs a year round special drop for all IDs on ultimate. I know that greenill and blueful get kroe's sweater. But the other 8 IDs get no drop. I seems like a bit of a deterrent for hunting new event items from Olga, since you never get the confirmation of his normal drop. And I think all last bosses of an episode should have something special that they are holding for the hunters to rip from their clutches. My suggestion is to give Olga Flow liberta kit as a drop for the other 8 IDs. Liberta kit is extremely popular for mags and super hard to get from bpd2 on hard. I think it would be a worthy drop for this boss.