I think there's a small chance that we get one (1) true Rag fight. Either Fire or Water. The reason being, they haven't liked us having two new toys two play with before. They even avoid putting things like Tower up during other events. But I'd assume that Accessory slots 4 and 5 won't get unlocked until the actual Second Anniversary patch hits, as that might cause conflicts in code that isn't expecting stuff like that.

I am expecting the Gem Gacha changes, as well as increased inventory space for sale. Maybe that one Rag. Either way, tomorrow should be a good day for maintenance to be delayed for hours for Nutaku Kamihime.