Just an Idea i had which could implamented into the game tell me what u think 
Rail Gun - Does less damage than a Blaster but has a Decreased Cool Down
Mass Driver - Higher Damage but Less Accuracy
Gauss Cannon - Increased Cooldown but Better Chance for a Crit hit
Thermobaric Rockets - More damage and Larger AOE but Increased cool Down and consumes more E
Pulse Beam Cannon - Increased Accuracy but Decreased Damage
Still thinking of Ideas
Rail Gun - Does less damage than a Blaster but has a Decreased Cool Down
Mass Driver - Higher Damage but Less Accuracy
Gauss Cannon - Increased Cooldown but Better Chance for a Crit hit
Thermobaric Rockets - More damage and Larger AOE but Increased cool Down and consumes more E
Pulse Beam Cannon - Increased Accuracy but Decreased Damage
Still thinking of Ideas