Given that DFINITY are now trying to include new node providers into subnets, I think the clustering situation deserves more discussion. I’ve rejected the above proposal based on the effects on clustered nodes within the NNS subnet.
All it would take for me to not consider these node providers clustered (for the time being), is a declaration from all 3 that there are no financial or ownership ties between them with respect to their nodes (including a statement that plainly clarifies the terms of the recent node transfer between them).