Despite your hope, there is not even any inherent symbolism; gravity is simply a coincidence.
I am looking at the new tech here (being a new Eclipse player) and I am confused about this tech. It makes me feel like I am missing something.
The base game already has a phase cloak which gives -2 to enemy die rolls. What is the point of Distortion Shield which apparently does the same thing? Does the phase cloak not work on missiles or something?
See this thread. tl;dr: distortion field applies to all ships and doesn't take a slot in any ship and thus doesn't need to be "upgraded" and it stacks with the base game shield techs.