Since it's a single player game all of these points are highly situational. Everyone seems to be taking on BC's in a different way and with different strategies. Using a phase ship, another BC, bomber wings, 3 cruisers lined up (yeah against 3 dominators the onslaught doesn't have a chance if they line up correctly...not even if the onslaught is focusing all his fire against one...the other two can be outfitted with kinetic weapons and lock it up in seconds...followed by reaper torpedos...if you so desire...so I don't really see a scenario where a BC can take down 3 or more cruisers without taking massive amounts of damage or being totally wrecked in the end). Of course you can smash down 3-4 cruisers if you fly the cap...you'd know where to focus your fire and see if they are incoming in a aligned position, if that'd be the case, you'd turn away, move out of their line of fire until only one pops up in front of you...1 down...the rest to go. I think the balance in the end really depends on the player and how they are able to manage their fleet. I never even used the Hyperion so I can't tell wherever the ship is OP or not. It's incredible how many mixed feelings people have.
It's really nothing clear and seems to be more of a subjective point of view.
Plus, it's still in alpha...it could change....oh and the idea to remove PD weapon slots from cap ships? That's just preposterous. Why wouldn't a capital ship be able to defend itself from bomber wings and all the tiny gnat's flying around and trying to destroy it? It's a capital ship...to expect anything less from it and suggest to remove PD weapons would be just extreme. It's huge, slow, with a huge hitbox, noticeable, powerful. That's what they are supposed to be, nothing less.