As both a Rillaru main and a simp for the queen I really appreciate the Aeria Charlotte Battlecruiser. My only complaint about it is a somewhat defenseless rear where PD can't reach, but otherwise it's the perfect ship for me.
It is an intended weakspot for the battlecruiser. You're given a ship capable of dancing around the enemy and pack-a-punch like a battleship. If you're fighting within your formation or replace the rear large mount with a point defense weapon. I'm sure that wouldn't be a problem for long. Also, I like it as well since its my personal favorite ship too with how elegant it looks and flies!