Basically things got out of hand, PD has to really commit to it and decided this was the best way to live for gems. Having decided being a tyrant of a parasitic alien race wasn't for her - maybe being slaves to the system wasn't for them?
Other gems are totally down with this concept, want to be their own person.
After full transformation to Rose (since Diamonds make gems, we assume they can fiddle with their programming/dna or whatever) and watching(*coughfuckingcough*) humans for awhile decide that she still isn't happy. Perhaps there is a better way to restart or to really build a bridge between humans and gems.
Guess I'll get pregnant to kill/transform again!
Be Steven and not know shit, especially you are former royalty - despite all the foreshadowing, easter eggs -ect.
Constant royalty motif compared to Steven, pet lion, wearing various crowns, being called a king, using diamond-locked computers,mind-swapping and literally bringing the dead back to life.>Lol, its just a normal quartz soldier powers .>Literally all Jasper and Amethyst can do is sonic-rolling