I’ve thought about such a hierarchy, but not only for battles, but more for dungeon management. So it would also be used for assigning tasks (assign a leader to something -> whole team does it).
For battles, if you want to get more tactical, I think the best bet is still full control of every team member.
The problem with the whole idea is that it could be UI hell, not only to implement, but also for the players to understand. Are there even any games that have something similar?