Kra'Vak 'Mines' system

I little idea I had for a Kra'Vak equivalent of a minelayer system:

Passive Kinetic Projectile Dispenser

aka. the 'Debris Dumper'

MASS 2, +1 per load
COST 8, +2 per load

Rear arc only.

This weapon dispenses small clouds of metal chunks that act like an artificial
meteor swarm. The clouds are laid behind the laying ship, using the same rules
as for laying mines, and each cloud expands to 3 mu radius on the following
turn.

Any ship entering the cloud suffers damage as if it had entered a meteor
swarm, 1d6 in damage for every full 6 mu of velocity.

Optional extras:

The clouds are unstable, and disperse after a few turns,

-or-

# turns Radius Damage turn layed 0 no effect 1 3 mu 1d6 per 6 mu 2 6 mu 1d6
per 12 mu 3 9 mu 1d6 per 18 mu etc.

Consider the cloud dispersed once it is to diffuse to damage any ship in play.

Also, the brave may want to play with moving debris clouds!

Any comments?