No .sog support? I can't tell if .spz or .sog is likely to win out as a de facto standard - or whether both will co-exist but annoyingly I've gravitated towards .sog as it seemed technically superior and I'd be mildly inconvenienced if it became a niche format.
https://threejs.org/examples/?q=gau#webgpu_gaussian_splat
Gaussian splat models are fairly imperfect on average.