Guess what i am opposed .
No one is surprised here.
first you need yo give some decent arguments why you want to see the kv1 buffed.
Single argument:
T34/85 greatly outperforms it in every situation, it can take as many shots, its faster to is gets away from danger more quickly and reliably, its in better doctrines, it have gun that actually work.
KV-1 is either obsolete choice, its gun is completely obsolete and its armor, while somewhat high, is completely unreliable against any axis AT weapon. Its better then T34/76, but that isn't an achievement
saying you hardly see the kv1 is not an argument. we hardly see the ost panther as well.
Ost panther is common sight in 2v2 and up. You only don't see it in 1s that often and its NOT because of how it performs so your comparison is void.
Three solutions are left, buffing durability, to give it actual non overlaping role over 34/85 as a damage sponge as currently its just tad bulkier medium.
Buffing firepower, but that won't happen, because 34/85.
Or T34 aka lazy way, reducing the cost, which changes nothing on the long run and while increasing its cost effectiveness, it wouldn't do anything for the tank and its actual usefulness.