Just a thought. How about having say only 2 or 3 size DNs in total? Say a DNL, a DNH, and a BB? Skip all the other stuff and make it a little more simple. Have all the races that would be in it having such said ships have equality(as close as can be achieved). If it makes things down to 2 DNs per race, or 4, so be it.
This would be in conjunction with the emphasis on having a (as used for example somewhere above) 5 DV shift for running and a 20 DV shift for dying.