Hi @GabrielB it is not possible to control the label position within a space (from Grasshopper). The label is always located in the center of the space area, and in Rhino it is only possible to move it with its grip point after the space has been inserted.
Okay. Spaces are not auto updated. So Grasshopper workaround via content cache is the only way. Add my vote on both autoupdate of Spaces and also manipulating label via grasshopper. These are important missing features, documentation-wise IMO.