funky idea for how energy shields work re: inertia
the shield projector by default shares inertia with any shields it's projecting. so if you hit an energy shield really hard not only will the shield be knocked away, the projector will be too, along with anything it's attached to
you need to do some special tinkering with it to get the projector to actually shift where it's projecting shields in response to impacts so the impact is absorbed without much force imparted to whatever is behind the shield