Coral's Plasmafield seems like a very unconventional weapon, what was the reason you chose to pair it with the shotgun?
Partly because the shotgun is a conventional weapon. The shotgun's defining characteristic is it does high damage in sudden bursts, while the plasma field does less damage continuously, so there's a contrast/compliment between the two.
What might appear to be at odds with that is they're both short range weapons, but the utility of the plasma field lets Coral stay closer to enemies, or advance into dangerous areas where other Androids would be expected to backpedal and strafe. Despite it lacking the raw power other secondary weapons, the way the plasma field can be deployed and then stacked with the shotgun allows it to have a damage boost role befitting a secondary weapon.
What might appear to be at odds with that is they're both short range weapons, but the utility of the plasma field lets Coral stay closer to enemies, or advance into dangerous areas where other Androids would be expected to backpedal and strafe. Despite it lacking the raw power other secondary weapons, the way the plasma field can be deployed and then stacked with the shotgun allows it to have a damage boost role befitting a secondary weapon.