I'd rather see current ships being better designed, because there certainly is no need for more ships right now.
There are too many Jack of all trades, and not enough specialized ships. They mostly differ in terms of hardpoints, jump range and cargo capacity, with all other aspects being either too similar or underexploited. I'd rather first see the Eagle become an actual long range fighter, the Anaconda being pushed either as a large battleship with heat problems or as an interdictor providing a sustained flaking with turrets preventing any ship from coming close, the Hauler as a very cold and sneaky hauler...
More ships in the current state would just give us different looking cockpits.