Aries & Polaris stars

it would be nice and useful at least for visualizing and understanding the space system we're flying in if there were those 2 stars, i'm still struggling with understanding the PCI system in new Vizzy and i'm not sure if the zero point along the equator is referenced to a point on Droo or a point in space (Aries). I won't wait for them to be made into the game, i already have polaris as a satellite that escaped the solar system with 90 degrees inclination, so i might do the same for Aries but again, it would be nice and simple addition to the game
PS: what's the reference point to measure ascending and descending nodes or apogee/perigee from ? it can't be the sun, right?