Both of these moves/positions exist in dance and we could argue they do also in rhythmic gymnastics/ gymnastics (women can perform turns with their leg extended on the beam or on the floor), even in artistic swimming when it comes to the spiral... yeah.. it's upside down with head under the water, but it does require a lot of the same skills, flexibility, balance and core strengthThe thing about the spiral is that it is (perhaps the only?) move that is unique to figure skating. Higher, faster, stronger? We don't need figure skating for that. Pole vaulters jump higher, race car drivers go faster, weight lifters are stronger.
Second, the layback spin. IMHO the moves that we should most cherish are those that define figure skating as a sport.