I saw a game in which crocodile was burning infantry at such a fast pace. I get its an expensive tank. But kv8's performance is nowhere near that performance.
KV-8 is also nowhere near that price tag nor its limited to 1.
Remember that croc got generalist heavy cost, but it sacrifices 100+ penetration just to excel vs infantry and its pretty fair trade-off.
Instead of a nerf i would actually advocate a buff to the flame damage.
Assuming you're speaking of KV-8, I don't think it needs any buffs and if it ever did, it should be though vet changes.
Let's be honest. No body is going to use that 45 mm gun to fight panzer4s. It only works on light vehicles. I know someone will pop up now and give stats. But in real match scenario the tank is supposed to be a good anti infantry tank. It should absolutely excel in that role even if we need to increase the cost slightly.
45mm can actually fend off ost P4.
Its not going to destroy it, because it'll run away, but it will not go down to it when at high health.
It is good AI tank that's somehow flexible and while not exceptionally, its still pretty durable.