The SIVA Offering drop types need a little coaxing. I've been trying to pull a Shank arena for two days. Today I had 7 Vandal arenas in a row, followed by a Dreg. No Shank. At the end of the Dreg arena, no one got an offering so we all just sat there for a few minutes then left. I'd like to see the drop types bucketed a little better. Total Skeleton Keys dropped for me since RoI went live.... Still sitting at 2.