Stretch goals: I don't know, I wasn't involved with the KS stretch goal decisions (I did weigh in on companion design, but those were guidelines, not mandates, and they weren't followed consistently). I did help out with press contacts (I got Josh the interview on NPR, for example).
I do recall Josh complaining about the "two big cities" stretch goal and he said that came from the owners, but I had no part in, or was aware of, that decision. Often, the "owners" were "an" owner or Parker and Feargus in tandem coming to their latest brilliant decision, but the problem becomes everyone else at the company believes such decisions were a group "owners" decision, which is really confusing when someone is in your office (like Josh was) blaming it on the collective and you go silent b/c you have no idea what the fuck he's talking about.