some good points there...
Just like in reality, there should be a role for each type of ship and this role should define the ships characteristics - handling, firepower, toughness.
Right now everyone flies VHFs because there's been this slow power creep upwards that has left everything else in the dust. They are tougher, have more firepower and are as maneuverable as anything else in the game, plus they carry about 100 cargo...why fly anything else?
Define the roles and relationships, then code the ships to match those roles.
LFs - Speed=A, Maneuver=A , Firepower=C, Toughness=C
HFs - Speed=B, Maneuver=B, Firepower=B, Toughness=B
VHFs - Speed=C, Maneuver=C, Firepower=A, Toughness=A
Average capabilities:
Speed: A=120, B=100, C=80
Maneuver: A=25% better, B=Average, C=25% worse
Firepower: A=6 guns (4-6 cls 10), B= 4-6 guns (2-4 cls 10), C= 4 guns (2 cls 10)
Toughness: A=10000, B=7500, C=5000
There's obviously lots of room to adjust for individuality, these would kind of just be center points to work from. The cool thing is LFs/HFs wouldn't be worthless, and I'd be willing to bet that some of our top pilots could easily gut those lumbering VHFs in a well flown LF.