One thing I don't often see people talk about in Steven Universe.
In the series most of Stevens powers come from a need to protect those around him. His shield, his bubble, healing spit/tears, all designed, and come from the desire to, protect those around him. With the exception of his floating which comes from a sense of joy and happiness.
In Future his new powers stem from a subconscious need to protect himself, instead of a need to protect others. He's dealing with a lot and his powers are reacting in an explosive way to keep him safe. Super speed to escape a dangerous situation, explosive screams to throw the threat away from him, and panels, thicker and stronger than his shield and bubble, to shield him from the perceived threat.
Which then makes me wonder, since Pink on Homeworld was known for destructive "temper tantrums" how often she must've felt so unsafe, scared and unhappy that her powers reacted the way Stevens do in Future.
When she became Rose Quartz she felt confident, comfortable and more safe as Rose than as Pink. She had a strong desire to protect the Earth and the Crystal Gems, developing her powers into the ones we see most in the show.
