Thought that Player starts as Rogue Trader of sort... Very nice mod especially in the beginning when you can effort only Escort ship... Light Cruisers (destroyers) seems to be make redundant though... they cost 4-5 times more than frigates and offer not that much of added firepower nor cargo and with additional 40 thousands you can get Grand Cruiser which is entire different league.
Frigate 15 000
Destroyer (light Cruisers) 45 000
Cruisers (Grand Cruisers) 135 000
Battleships 400 000 circa
This scale would make acquiring bigger ships more rewarding.
My Idea Better and bigger ships only as reward for quests and Faction advancement as Rogue traders rarely have ships bigger than light cruiser and more advanced than Exorcist class Grand Cruiser from Imperial Navy surplus. Just like in this mod:
http://fractalsoftworks.com/forum/index.php?topic=6229.0