Seimei is like a pair of old comfortable shoes for a sport that is becoming a jump drill, a game of points crunching probabilities. I was never a fan of the program, but I totally understand the ease the pressure aspect.
Figure skaters should define their programs, and not let programs defining them for point scoring purposes. Seimei is giving enough for mistakes and improv adjustment to focus on jumps through the performance. PCS has become irrelevant since it rarely reflects what the skater did on the day, or actual artistic values.
Hanyu better does something original and challenging in his short for balance.
If I am the judge, as a general rule of thumb I would mark PCS -5, -8 just based on repeat programs. Otherwise, skaters gain unfair advantages in TES: GOEs, and favourable established benchmarking already, only fair. Otherwise it is unfair for others who put in the effort of learning new choreography every season, take risks with their choices, new routines etc.. Otherwise anyone can just bring their greatest hit, stick with it for 3 seasons, just focus on clean clean rotate and just be done with it.