Yop. Just to try to define "break" a bit for others who have an aversion to that word, it reduces the generality and transparency of the intermediary transit. Solving a problem today shouldn't reduce future connectivity. Choice should happen at the edge whenever possible, just like in the real world.

Embedding a choice in the middle often snowballs, for the same reason those in power rarely give it back once they hold it. Centrality becomes the norm, with all the chilling ripple effects.