These are two different use cases. TCP socket support would allow integrating SmartThings hub with myriad of existing devices without requiring HTTP bridge, for example Envisalink 3 for integrating with alarm panels, iTach IR bridge for audio/video integration, etc. If you search the board, you’ll find a lot of stuff that could be easily integrated should ST opened up TCP socket comms. BTW, I’m talking about outbound socket, as opposed to inbound HTTP/JSON, although that would be welcome as well.