Some people over on WDWMagic think this recently filed patent could provide us with the closest look as to what Disney could have been planning for the original Quinjet Avengers E ticket:
A patent filed by Disney shows how they plan to improve flying theater attractions like Soarin' with a greater range of motion.
wdwnt.com
In addition, after looking on the ThemeParx website, here is some leaked concept art from the quinjet attraction from designers who helped work on Avengers Campus:
Mark Brashear Portfolio
www.markbrashearart.com