Figure skating is not tennis. I don't know if there is a large enough fan base to support the revenue that goes into maintaining the sport and its competitions. With more and more technology being invested, the sport is just getting more and more expensive to participate and even more expensive to organize a competition for. Did you see 4cc arena being filled? I didn't. Who foots the bill?
ALso, the skater's prize money hasn't gone up in 20 years, but the cost of running the comps is rising. Remember how Tanja Szewczenko making like 30000 in 1997-8 per win, and being able to do something with that money? THe prize money is way less now, and the cost of skating has really gone up. Without endorsement, prize money hardly even covers anything now. ANd it's not like there is a good skating tour or made for tv shows that pays well that covers expense for the year.
I so hope one day skating will be more like basketball or soccer where there is little cost-related barrier to enter. I believe the most popular sports do not require high upfront cost. ALso, I think having judges/callers sit around the rink, instead of being together, may already mitigate some of this. And while we are at it, instead of having a caller we can just have judges around the rink calling the elements. The judges can end up with different calls, but the more obvious URs will get the majority of the judges calling for it. Just a thought.
I don't think it's necessary to immediately use the technology for all of the competitions. Even if it's just used for Worlds, it would still have an enormous effect because the federation spots are on the line and they would be conscious of this during the team selection process.