Fleet fights are decided by numbers too often but that in its self appears to be a community issue with players having an argument about skill gaps justifying ganking when it hasn't been agreed upon.
Artillery meta is absolutely boring and unfun. BC's strike a nice balance of powercore maintenance and mobility being able to disengage and engage when ever is fit choosing either sustained fire or a full burst of damage using their nicely scaled secondaries. I'd enjoy moving more toward that kind of capital ship pvp.
come away from artillery meta and have things closer range, faster refire and lower damage to bring down the desync bugs effects on pvp to a minimum making fights seem more fair rather than taking massive amounts of damage you obviously dodged.
Upscale cruisers and adjust their DPS accordingly, would be a case by case since of course not all cruisers are in good spots as is.
Perhaps unpopular for me to say but cruisers currently, in this game of consistency with both your hit rate and performance as a pilot, are the best class of ship in the game in terms of survivability being able to comfortably dodge at around and even under 1k where even blindfire isn't a guaranteed win unless you're equipped with mortars to snipe with and are exceptionally good at it. Like a well skilled snap pilot per say.
Perhaps increase the impulse speed or add a thruster which increases speed by 10-15ms and experiment with that for larger ships to make it more dynamic such as having different thruster speeds for dreadnoughts than medium and light battleships.
Adjust the power cost of weapons to try and make them closer to BC's combat in terms of attack choice.
Break the strafe speed standardization for the love of god! Turn rate and strafe speed are the most important stats for a ships mobility and thus survivability. A bismarck should strafe faster than a tokugawa to compensate for its larger profile. Adding more health for the most part means it'll die all the same, just with more shots.