I just noticed how Madoka is in her school uniform instead of her magical girl dress, but the others are in theirs. It seems really symbolic about how she's always just Madoka herself, and how the others are very closely tied into their magical girl selves.
And there's actually a reason for that too. You see, out of all the girls, Madoka is the only one with a happy family and a happy life. Up until they met kyubey of course. Sayaka struggles with her feelings for Kyousuke. Mami has literally no one in her life, Same for Kyouko, Same for Homura (she's been in a coma but doesn't seem to have anyone around when she wakes up).
Madoka is the only one standing up, resembling that as a god she's above everyone else. Kyoko is looking down, reflecting on her past regrets. Mami is feeling her neck to make sure her head's still in place. Sayaka is pouting similar to how a child would if they didn't get what they want, that thing being Kyosuke. And Homura is just... Homura
In my opinion, Homura's partially standing up, showing that she is above the others in some form, perhaps as a reference to her godly ability to move through time. She also looks distraught, like she can't believe that they're all alive, like something's off. Or perhaps we're just looking into it too much XD
Kyoko and Sakuya look like they're regretting things, Homura and Mami look like They're about to give up, And Madoka just looks as if she knows she's powerless to help her friends, that she's a coward, and she knows that she could have saved them all if she'd just had a courage to. This is one of my favorite remixes for Sis Puella Magia,it was already a really beautiful piece of music, but TAM really makes it magical.
