@sozap Thanks ! Hehe happy to share 
@Ace_Dragon thanks for the feedback. I’ve abandoned the node based solution for now, but I would like to find a way to force my UVs to match. Right now every model has its own set of UVs and its own set of textures which is overkill since they should all reference the same data. Food for thought !
Regarding the retopology part, one of the ideas was to get a model that would be “easier” to animate, with correct edge flow and quad topology. It would be awesome if there was a “retopology” node available natively in Geometry Nodes.
Here’s the newborn
