> I'm hoping to see a more standardized PoDL interface crop up so that I can use two wires for data and power combined, for lower-power subsystems
IEEE802.3da is working to add PoDL on 10Base-T1.
objective 9. Specify optional plug-and-play power distribution over the mixing segment
objective 10. PSE shall only energize the mixing segment when at least one PD is connected
objective 11. Support addition and removal of a node or set of nodes to a continuously operating powered mixing segment