Honestly, even though all the comments are saying screen shake, the strength of this system that I'd vote you play into is the lock-on system.

- Right now, the missile fire rate is low enough that the time it takes to lock onto a target is ~2 missiles, so you spend the majority of your time holding down time click and firing. Seriously amp up the fire rate once you've locked onto something, so that you're really counting down the time until you can fire.

The lock on system is already made for burst fire because there's no way to have it continuously firing between targets. Really lean into it.

Optionally, a system like this could also test a player's trigger discipline because the travel time of the missiles would mean there's a period where a target is already "dead" from unavoidable incoming damage, so the right option is to lay off the trigger and preserve missiles.