Many of the new capital ships have non-generic names, like the Zoner "Conference" Gunboat, Outcast "Storta" Destroyer, Bounty Hunter "Mako" Battleship, etc. It's mainly the vanilla capital ships that aren't named.
I understand what you're saying, and I agree. There ought to be nicknames for the capital ships, just as there are for the fighters. It can't be that hard to do.