remember! you can do what you want. in all systems with interchangeable components, always one (... only one) system will be THE BEST.
following this idea, all players will always choose this configuration.
in this case your personal configuration is no longer personal, but a 'must be'
next question: how strong should be the result of this personal ship design? between BB5 and BB6 or stronger than BB6?
There's already the EBB5.5 class between BB5 and BB6. stronger than a BB6, in GB battles this ship would outclass all ships smaller than BB6.
to insert different sailor's, different AAA, HH, different armor and so on, offers enough possibilities to personalize a ship. btw ... I personalize my ships with an original name. lol