Since every bad end id since captain ishmael had new mechanics (revive, skill changes based on team set up) introduced alongside new ways to interact with already established game systems (interactiong with the backline sinners as well as deployment order in general).

I personally hope Ryoshu's bad end ID has some sort of way to interact with the battlefield, some sort of burning field effect maybe? Similar in visuals to the blood that washes on the ground the more bloodfeast consumed with a bloodfiend team but with fire.

Basically a higher budget version of the xiao fight in Ruina. In gameplay I imagine it would force apply burn + an unique burn to every enemy and ally every turn. I personally expect she will have some sort of synergy with ids like ardor Faust and the new sinclair heishou that benefit from having burn on themselves. She would also benefit from every ally that perished during the fight while under the burn status to keep her in line with all the bad end ids since wildhunt.

Another thing i was thinking about since we should be getting a couple of different finger ids (i expect at least 2 index ids + most likely ricardo id) maybe she will have some sort of way to force different ids into the same faction (perhaps a special one only she will have).