I'm not sure how much potential improvement you can expect there in the near future. There's a pretty large jump between the conventional superconductors and th

I'm not sure how much potential improvement you can expect there in the near future. There's a pretty large jump between the conventional superconductors and the new high-temperature superconductors used here, I'd suspect that it'll take a long time of incremental improvement to build stronger magnets with these new materials. There's a lot of practical problems with building very high-field superconducting magnets. I'm also not sure how much you can gain from the thinnness of the material, conventional superconducting magnets have a lot of non-superconducting material in there as well to conduct heat so that the magnet isn't immediately destroyed on a quench.