I always had a big interest in the story for the original PSO because there was a lot going on but you had to look for it to figure out how it all ties together. One thing that bothered me is that they never mentioned what happened with Pioneer 3.
You can see an image of it in the shop. There is a map (I think it was by the tekker) showing Pioneer 3 location in space. An NPC in Gallon's Shop quest says that Pioneer 3 is on it's way. Then, they never mention it in Episode 3 which is 20 years later. They also never mention it in Zero which is even further into the future.
I have even looked through Japanese media and found nothing. What do you guys think?