All the civilian corporations could use them to protect their trains from piracy. That's not a bad idea. But a new design would be better. Just create a little drawing.
As the community is currently searching for additional models for ships, I feel there is a need to revive this great thread started by Karst and draw attention to this glorious model.
With a few modifications, I think this is passable as a decent replacer for whatever it is we are searching a model for.