Currently only light fighters truely stand out...them and SHFs because they are so different.
Some HFs are balanced nicely to have proper roles, but tell me, what can an HF do that a VHF can't do better right now?
That's the main issue really... VHFs can be balanced to be comparable to each other, but for the most part, HFs in general are inferior ships that fill the same roles that VHFs can do.