Currently the assault is the weakest class in the game. It is supposed to be "average", but is severely under-powered in comparison to other classes. The assault class has low shield, average movement, and weak damage. Tieing for medium/long damage with the shotgun class, while having the shield capacity of a sniper.
Source(Wiki-MCompany): https://docs.google.com/spreadsheets/d/ ... edit#gid=0
To balance the Assault class, it needs a dps buff and a shield to compensate.
+450 shield capacity(+15%)
Leaving it with similarly proportional stats, while allowing it to fight on better terms against other bot classes. Even without the 4v4 mode, buffing the assault class would allow it to be more aggressive giving a more exciting game-state.