No, but I don't want to make that bet, and there is nothing theoretical after that that would require changing to other primitives... so if there is only one necessary migration that gives us stable IDs forever, might as well work on it now.
Discussion
sounds like wasted work to even think about it
it's much better to wait for when it's urgent
When it is urgent you will have no time to create a large enough DHT to be resilient. Then you will lose the identity you spent years creating URLs for. And all these URLs get broken. Why? If we have a good solution now, we should get it ready.