Certainly no reason. While the original goal of the quickstart was, and remains, an educational vehicle, the defaults are all sensible and inline with best practices. The PKI is arguably overly complex, but in practice plenty of people run the quickstart in their production setups. Also note that the quickstart's main benefit is in generating the PKI and initial configuration and these are things that in practice, change little. I don't see any problems at all.
Thanks for your candid feedback. I'll be honest, I don't blame you. Hopefully, through our responsiveness, we've earned your trust that even when a rocky patch is hit, the team is responsive and fixes problems quickly. I do honestly believe that there have been very few "rough patches" like this with our quickstarts in the past. Not to say there have been none, it does still happen, but generally, they are quickly resolved. We're also undergoing an effort to add even more testing around these sorts of things so that we learn from our past and don't repeat mistakes.
I even commented on this post as to how to backup and restore an instance. You'll want to read on over here for those few steps: Backup / restore in hosted server - #4 by TheLumberjack
Cheers