But spirals should showcase EDGES and GLIDE, and in America, are part of skating moves called "gliding manuvers" which include Ina Bauer moves, spread eagles and the spirals. I have no idea why they decided to drop this sequence other than all Level 4 SpSt looking alike, which makes competitions have less variety. Maybe one day it will return as an element that gets points. Until it does, we won't see it.
The L4 spiral sequence had no muscial value as holding a spiral for 5 seconds (which may fit the music) and two other spiral positions for 3 seconds each would be worth less than hold a spiral for 6 seconds (which would look choreographically odd) and two other positions for 3 seconds each.
I like the ChSpSt1 in the LP to allow it to be more choreographically interesting. Doesn't mean people won't still do U-G-L-Y spirals...