I kind of wish that they'd only let you pilot the Brute Justice after you've scored X number of kills or some other requirement to make it less likely that incompetent players get their hands on it.

It can make a tremendous difference if someone is using to support a push, especially up north where the chokepoints on the bridges make it difficult to avoid its attacks. However, most of the pilots I've seen just run off and start fighting with stray players and chasers instead of sticking with the group.