I'm fond of the idea of building up battery gauge so that we can summon and then pilot the Queen like an Iron Man suit. When in this suit we would not become a melee attacker but continue with new ranged abilities that culminate in a flashy but powerful beam cannon ability (shameless Gundam fan here). This could be a burst phase that last 20-30 seconds? I don't really like that we have no meaningful interaction with the Queen once it is out. We don't even change our rotation.