See if this can push you in the right direction:
The first point is drawn where the camera is, the second is drawn 200 uus in front of the camera and converted back to 2d - a small pure function so we do not need to spam the same nodes all over again.
From a side, it would look like this:
Are we even still going the right direction?
Btw, when I tried to do it with a component, it was all over the place and I have little mental stamina left to wrangle its transforms.