Some of the things an MBT can do for you even in small numbers.

1. Provide stabilized platform with advanced fire control for machine guns.

2. Provide a range or main gun ammo types to be able to address a wide range of targets and circumstances.

3. A heavily protected platform from which to rally friendly troops and conduct C2.

4. A heavy vehicle to use brute force to smash through walls, buildings and obstacles.

5. A weapon system capable of rapidly firing accurately at point targets at long and very long range.