Ah, my OTP! (Although lately in my headcanon I confess that I've been working Ren into an OT3).
^^ Seconded! For once give the fans what they want!
^ I still remember the disappointment of the first Love Live movie in which Nico and Maki barely interacted at all, and NicoMaki fans were tossed one little bone (Nico's awkward moment of jealousy aimed at Tsubasa while assisting Maki at the piano). So I wouldn't hold my breath.
^ Also, my initial assumption was that Sumire was holding some kind of Shinto talisman, a shinsatsu ofuda or something of that nature. That wouldn't make sense if it was a gift from Keke though.