As I am probably the person here who is known for piloting LFs (while being average at most while doing so) I wouldn't want any of the suggestions. I fly them because they are incredibly fun to fly, basically the extreme opposite of battleships who are slow and tanky, while an LF can be mine-slapped instantly. That's a risk I take. I like being able to run away from fights while not being able to deal much damage. Basically, I only managed to kill stuff using HAMMERFALLs from FP11 or FEUERBALLs since they are available to LFs. To be honest, I avoid shieldrunning and died quickly in PvP, but always to mines only, and only in one single instance to the natural fisheye of Protege.
I guess if someone like Wesker would use an LF, especially with FEUERBALLs, that'd be frustrating, especilly if they are on a Liberator. I recall one instance of Kreuzberg using a Hussar with Hammerfalls to wreck five Corsairs. Would taking away their DPS fix it? I don't think so. A tiny barely unhittable ship with two HAMMERFALLs or FEUERBALLs can still deal a lot of damage while dodging. I think upscaling the ship hitboxes would only do so much, maybe adjusting all their sizes to a similar level. The Liberator is the extreme here as it is as tiny as the Hayabusa while the Liberator can mount more weapons. The Hayabusa only three.
Changing the class entirely? I think that'd go along well if there was a specific need for interceptors, and only then. Right now, any cruiser has the same CD-abilities as an LF. Why? If Cruisers, in my book, would have CDs at all, then only about 20 and only for torpedo-defense. Something like mini-flaks, guided but with huge AoE. Right now however cruisers are just as effective in CDing as LFs or anything else are - except battleships.
Creating a new class works only if there is a need for it. However with Cruisers being "omnipotent" in those regards, why would you need interceptors at all?