I too wish that we'd gotten more of Smoky Quartz's positive combo powers as well as the negative reinforcement, but thinking about it, it is kind of interesting how the recent Amethyst --> Smoky Quartz plotline does allow the show to highlight more of Steven's insecurity issues. It's sort of easy for me to forget about them in a lot of the day-to-day episodes because he generally presents as fairly well-adjusted and carefree and with the expectation that people will like them (in contrast to Amethyst, who wears her issues right out there on both sleeves); like, I can't imagine Steven himself coming out and saying a lot of the things that Smoky Quartz says, even though it's clear that he definitely does think them.