If this is already included in the game and I've missed it please correct me. I think that to be able to view the 45-degree cone around a phase lane that ships can use for jumpswould be an extremely valuable feature to add to the game. It would be extremely useful for planning defenses and for planning jumps. I'm not sure why we don't have the ability to see this already.
Maybe the "cone" could be displayed in a slightly different colored overlay that appears when placing structures, moving ships, and such. Any reason why this couldn't be patched in at a future time?