Rachel could have discovered her kink after spying in the office, and confirmed it by watching Catherine's spanking, and being fascinated. to explain why she was looking.
if she stole the ticket book, she might have come to ask for the favor. and she might want the favor to be punished by MC or having her kink explored privately.
Lucy didn't actually get her phone yet, they needed two more days to deliver it. MC should have asked for one that was in stock once he heard there would be a delay.
Victoria's father, it might be too early, but we should get some hints or foreshadowing by now, as her brother left and won't stay gone for long.
Brian confronting Hannah is highly possible, making her call MC for help as he told her to do, to kickstart her romance arc as Sarah's is ending. Catherine's arc is also beginning for real now, so it would make sense to have them both compete for MC's attention. it seems to be their dynamic.
you forgot Misaki ! she should get some content as MC promised to meet her the day after the council
well, you say "worse" but I hear "better"