I just transferred to a new PC so I'm taking some breaks and not really working on my military base right now, so here is a fictional tank concept I came up with. It's somewhat inspired by the WH40K Baneblade tank.

The M2A72 AAV Tank or Baneblade is a marvel of military engineering. Designed to spearhead an armoured assault the Baneblade has plenty of weapons at it's disposable. With a dual barreled 420mm cannon, two 120mm double-barreled secondary cannons, and several .75cal tertiary weapons, the Baneblade has burned its name into some of the even most terrifying foes. Designed in 2132 it saw service for over a century before ending its service in 2275 from a treaty which resulted in mass disarmament of the military. The Baneblade was said to have too many weapons or its armour is too thick or its engine was too powerful, the Baneblade was designed to spearhead assaults, shatter enemy lines, and break enemy morale. It's max speed of just over 100km/h and range of over 4000km allowed the Baneblade to move far ahead of the enemy position deep into the unknown and disregard possible risks and charge into the enemy without turning back. The Baneblade wasn't much of a squishy tank, it had extremely thick composite armour and several ERA panels throughout the tank, making it extremely tough and a powerful foe. Any reasonable commander would retreat and wait for artillery or reinforcements instead of trying to fight the Baneblade head-on, as of it was basically suicide. Make no mistake, it's best to retreat and wait or surrender when a Baneblade appears on the battlefield, or you'll forever be scarred by its immense power and strength when on the battlefield.

Characteristics:

Max speed: 110km/h
Armament: 1x 420mm Dual Barreled Cannon
      2x 120mm Dual Barreled Cannons
      4x 95mm Side Mounted Cannons
      5x .75cal Machine Guns.
Engine: Astartes Engineering AGT6500 Engine
Weight: 250 Tonnes
Armour Thickness 10in - 20in
Crew: 16
   1x Commander (Seated in Turret Above Gunners)
   2x Engineers (Back of Tank)
   4x 95mm Cannon Operators (Seated in the Sides)
   2x 120mm Cannon Operators (Seated in the Infront of Turret)
   2x Diagnostics Operators (Behind The Driver)
1x Navigator (Behind Front 120mm Cannon Gunner)
2x 420mm Dual Barreled Cannon Gunners (Infront of Commander)
2x Medical Personnel (Behind 120mm Front Cannon Gunner)

Made For 1.14.2 and Above