So i've been playing around a bit and I noticed that, at least with late tech ships, BBs are absolutely worthless compared to BC. One out of two games (at least), I am bound to see a BB, my side or the enemy's, get ammo detonated or flash-fired. Several times, no matter if said BB is a 38k tons cardboard box or a 130k tons floating fortress, a SINGLE shell will blow the entire ship. I had a battle last 2 minutes because, somehow, a shell from my first ranging salvo (3 shots on tripple turrets) hit and detonated the target, a 55K US Battleship, at 30 kilometers. Meanwhile, I take a BC and just head straight into an enemy formation at around 36 knots, barely take a scratch, and get better results overall. It's getting a bit silly to be honest.
The overall balancing is getting there. I would say all ship classes are not far from the desired sweet spot. Though right now, I really think BBs are either way too weak against all forms of detonations, or detonations in general need to be softened down. I like having a challenge, but adding more and more ways to loose ships because "RNGsus" is frustrating; no matter if I play good or stupid, the sheer frequency and randomness of these things makes for a very mixed experience.