He doesn't need anything, it's a suggestion. I enjoy going through Abyss with more than just two teams, so I always think in terms of having many teams built up and ready to switch in at will. If you prefer to only have two teams, that's fair.

Moving Shinobu to a different team is also a suggestion based on AH's team ending up with two healers if you run Baizhu and Shinobu together, which is overkill, while your other team doesn't have any. A switch between Raiden and Shinobu would balance both teams out, but it's your call.

I mean it's your call either, you were kinda looking for options on so I suggested some, but if they're not what you're looking for I hope you find other configurations you like better.