Probably 99 percent of players here don't know that KV-4, before it arrived on PC in 2012 was supposed to feature a 130 mm gun as it's final upgrade (It was also 20 tons lighter and much faster, with a top speed of a whooping 50 km/h )
However this never come to pass, 130 mm gun was removed before release and it was never seen again, all that is left are two images of the fully upgraded tank, thus it never had a chance to arrive on Console
There's also zero information about it's parameters, back then they didn't share them as much as they do now
What I'd like to propose is to bring this obscure thing back as a tier VIII premium or a gun package for tech tree KV-4
Gun I'd like to propose is the pre buff version of the 130 mm S-26 from ISU-130, obviously with much longer reload and worse accuracy but with really decent aim time for such higher caliber cannon
Similar gun from SU-100Y was too weak for a tier 8
It also features ISU's signature premium AP shell with increased alpha damage at the cost of lower penetration
Exact parameters are in the image below