It's not that I don't like Wendy but there were good times to show even a little bit of romantic interaction with Rin and Yui, like before when Rin hugged or kissed him in surprise. There was even a good time to talk to Kristal about her friend and I think that Yui had a good opportunity to assault him in the shower or while he was playing video games.
Also the three are supposed to be competing to see who takes the lead to be with the MC, that would have preferred instead of adding Angela or the photo shoot.