The KV-1 (named by a famous Russian general Kliment Voroshilov) naturally had a high profile and was easy to spot and recognize if out of cover from camouflage. It was a slow moving, lumbering giant of a tank but, consequently could hit back 3x harder than what if would receive on the battle field. I'm not trying to butcher your work ProgV but your KV-9 design has serious drawbacks but is a nice concept.
*AaronAspen <-- is a tank historian and battle field tactical nerd.
In fact, the KV line of tanks has always been considered a bit lacking on the gun department. KV-1's had the same 75 mm. gun of T-34's, which was enough to knock down the lightly armored German tanks of the initial stages of the war, but uncapable of taking on heavier designs who came into battle later on. The one great advantage it had was it's massive armor. The KV was invulnerable to any German guns save the 8.8, and remained almost invincible until 1942. Once that advantage was lost, the days of the KV were counted.
There were later models, which improved its firepower with a 85mm gun, but this was simply too weak for a heavy tank (by that time T-34's were already armed with 85 mm).