I picture Stardust as a grumpy mentor figure that will call up Quasar any time she makes the slightest mistake to scold her, so I like the idea of her still being alive and in touch.  Basically, Quasar will panic whenever the phone rings, since it's usually Stardust pointing out all of her failings (which, in Stardust's opinion, are many and varied).<br/><br/>I think Stardust should've had some kind of very minor super power, being from the Gold Generation.  I'm thinking she was able to generate glittering clouds of lights, which she used to disorient and distract villains.  I think she probably should've been part of a team of heroes, and eventually was forced to retire when the Silver Generation started popping up because she just wasn't powerful enough to get the job done anymore -- perhaps some of her extreme attitude at Quasar's mistakes is because of how powerful the young hero is, and she's a little jealous of that, and also afraid of what she could do if she gets out of control.<br/><br/>I think Stardust should have been famous for being extremely photogenic, always smiling, always ready to put in a well thought out sentence for the press.  Basically, the golden age super hero starlet and media darling type.  Because of that fame Quasar's family knew about her, and when they had a chance to contact her they did, and Stardust agreed out of a combination of wanting to actually help the scared young girl, and wanting to relive her glamorous youth.<br/><br/><hr/><br/>The something that drew us together should be big, but not super public (at first).  If it was really obvious, like an alien invasion, there are so many other heroes who could've stepped up in the city.<br/><br/>I think there should be an organization run by one or more super villains but full of super gear equipped normal people (like Hydra in Marvel) that we all independently were trying to take down, having not realized just how far in over our head we were getting.  When everything came together we all were investigating them at the same time, and rescued each other to fight off the entire group (with a big enough fight to draw a lot of attention at the end -- maybe some giant robots or something involved).