If you would want fully practical ships, you would end up with a pyramid like ship, where the tip is facing forward (much like a stardestroyer).
Because such a ship can fire all it's weapons, apart from the rear ones, at one target.
But for me the Victory has one kinda big weakness. It has several beams mounted on one big tower. So you can destroy a couple of weapons with at once, leaving the Victory with it's forward- and backward-facing beams with minimal firing arc.
The EA ships with multiple turrets with each only one or two weapons need longer to be disarmed (of course not taking into account, that the victory turret can take much more punishment, due to the stronger hullmaterial).