Thanks again for sharing the plugin.
I’ve now had a chance to test it with a Gaussian Splat of Mont-Saint-Michel.
As an experiment, I combined it with Heron and aligned the splat with a WGS84-based geographic context in Rhino, adjusting its position, orientation and scale.
It seems like an interesting way of bringing non-georeferenced 3DGS data into a Rhino × GIS workflow.
Here is the result so far.
Data used:
Mont-Saint-Michel 3DGS: SuperSplat
French administrative boundaries: Admin Express COG (WGS84 / EPSG:4326), data.gouv.fr