There's some document out there on the DC site perhaps that shows the state of things with Ubercart (as opposed to Drupal Commerce). It appears to me that Ubercart will pretty much not move forward since it's a D6 module and will eventually give way to D7. It seems stable enough to me. I don't think we can expect too much more from Ubercart, right?
Yes, it really does little good to ask a question on these pages. Until a significant group starts viewing them just to help others, it's just everyone with questions and no answers. That's what happens I guess.
I still think there's not great documentation written for UC. There's stuff out there, but it's all over the place and not always even correct.