The problem isn't the gun....the problem is every Joe Shmo gets gear that SHOULD be hard to find....but is as common as anyone wants it to be...
The problem IS the gun. The gun isn't been overused and overdistributed over the entire team (like plasmas), because it sucks against infantry. You only see a few dudes pulling meltas and single-handedly crippling the attackers' assault. Meltas need their damage toned down against vehicles, and a slight damage buff against infantry. Fusion pistol, however, is a different story. The thing takes like ten heat cycles to down a vehicle, and it might as well be a literal hair dryer against infantry. I once blasted a downed enemy with it and it still didn't kill him... If anything it should just get an AI damage buff. But yes, it's a secondary weapon that any class can equip for some AV work, but it's also very expensive point wise. I'm not saying it should be as good as the shuriken pistol in terms of AI, but it should at least be a little viable.
Then you are free to do that, someone else who enjoys it will do it instead. As I wrote the main point was that the TTK for vehicles should be the same regardless of faction. However if i could choose the TTK would be higher so that Its enough to have someone nearby and not neccesarily in the driver slot 100% of the time.
The "used on infantry" part. Harlequins pretty much use dual melta pistol to melt your face away all the time while "dancing" between troops. Inquisitional troops, especially SoB just flame and melta everything in range.
Ah, well at least as they are built in EC they are not intended for AI use. If we got some AI buff for a AV tradeoff I would be more than happy. But right now it's pigoenholed to just AV. If they get damage debuffed I don't think you would see them get used at all, you would just have more people using meltabombs. Something closer to the not gimped Rokkit would be awesome, seeing as you can kill people with the Rokkit, and it's very hard to do so with a melta unless you can catch them by suprise to build up heat first
And you like the rest of the people that ask for buffing vehicles/nerfing melta forget that it takes similar manpower from the defenders to deal with vehicles,at least moving vehicles. BA use meltra pistols aswell,
Which might change if the melta crusade will succeed as the weapon won't remain useless AI if its AT was to be nerfed.
Yeah, I actually edited my response to something like this just a moment ago. I realized it right after typing it.