A Steven Universe Theory after Monster Reunion - I was about to write something really similar but then I read this and I found some other stuff I didn't notice/remember....I bet this is gonna get confirmed 100%
I don't think she has the third eye because of not fusing completely together but because it's the future vision eye and is unlike a regular seeing eye. But the rest of it makes a lot of sense! << would make sense
See more 'Steven Universe' images on Know Your Meme!<<< OMG! That explains why Peridot didn't summon her weapon when her and Steven were cornered by the mini clusters, she didn't know how because she was never taught! That bothered me so much while watching that episode.