Thanks a lot for your quick reply Julien !
I managed to workaround it using the post generate function and parse the generated output data, but not direclty in the PCG graph, the spawn staticmesh / spline mesh nodes don’t seem to have a ComponentReference output option ? Unlike the generic Add Component node.
But it does the trick for now (a bit “Heavy”, I’d say, but it works 
)
And about adressing it in the future, it’s fine for us, if it’s not too heavy code change, we could even cherry pick a CL later on.
Cheers,
Guillaume