Wilf said:

The technology is there, but the thinking, as in implications has to be kept somewhat in check.
I think this kind of shooting platform is ideal for inferior force in small battlespace, which has to carry out territory defence. You will get best "weight per kill" ratio and this is really "shoot and forget" solution. You just empty your container (that may selfdestroy itself in seconds) and switch to another previously hidden platform. You don't have to drag all that logistical tale with you.