Okay, good bye page of counter arguments now ive remembered this is for an entire new ship class.
i have to say this ship class to be effective must have insane speed and manoeuvrability (to get around this hard to aim business) but that against current weapons would mean the ship will never be hit if turret steering. Also just remembered that might not be a valid point seeing how these broad siders will be heavies them selves, BUT!!!! like what valors sometimes do to TS'ing foes, 90ms speed, Engine kill, Force the foe to face your FG or lose their close quarters advantage. Another ship can do this to force this broad sider to turn their face to you to keep in broad side range if this gimmick is their main method of attack.
Also you got the same issue with what ive flown for ages now, in conn... my redemption never broad sides with its 5 cerbs a smaller ship type. This heavy ship would have to be a dreadnought killer like how you have tanks and anti tank-tanks irl.
This post might be messy af dealing with 3 chats at once and editing bits in the middle of what i first typed.