I've seen a lot of folk complaining Tactician mode is too easy. One very easy fix would be to remove all the metagaming information from player view. I'm talking about the hit percentages, enemy hit points, AC, resistances etc. Having the player know when the enemy has less than 50% HP is fine (that's RAW anyway).
This would also have the byproduct of more closely resembling a true tabletop D&D experience where the players aren't fed a ton of behind-the-scenes information by the DM.