A cool twist on the formula would be this becoming a story of the three of them bonding more and more in their commiserating, eventually becoming good friends, letting go of their unrequited love for the dude, and going on to fulfill their personal goals and self-actualizing.
Meanwhile Nanao and Izumi get closer and date and stuff, but the focus remains primarily on these three and they all build a true non-losing-heroine bond of friendship.
They still have to process their unrequite love and stuff (with setbacks and the occasional scheming and infighting), but the story is just their healing journey, as it were.
Would be neat to see.
