G4 isn't over yet. Hasbro still has a few of those long-term backburner things running in various places around the world. One in particular is the Galaxyland park over in Demonton Canada, that has adopted a new Hasbro theme for it's overall asthetics. Included in that is a pony section, with a rainbow dash drop style ride, and a carousel in more ponyish colors. Things are still under construction, but at least they've got a good amount going already.
Check out a video of it below from the mall itself. The pony part is at around 3 minutes in.
Thanks to Potters and nfred for the heads up!