Commercialisation of a WiFi plug-in on the ESP8266 - what features would be of interest?

A DIY-focused version should expose USB/programming access so users can upload their own firmware, or at least offer pre-integration with systems like OpenHab and Domoticz; for that market, the hardware itself is the main draw [#15644221] [#15646153] For a mainstream product, the thread says you need the whole ecosystem, proper safety features, and required certifications such as CE, because once you sell to ordinary users you also take responsibility for security and liability [#15643994] [#15644520] [#15644568] Several replies suggest that the most useful added function is more than simple on/off switching: power/current measurement, at minimum a 0/1 indication that current is actually flowing when the relay is closed, helps detect a plugged-in device whose own switch is off [#15648382] Another proposed direction is to add thermometers and local automation rules, e.g. turning heating on below a set temperature, but this must be designed with safety and robust fail-safe behavior in mind [#15646153] [#15646229] The thread also leans toward local control and open integration rather than a cloud-only solution, because cloud dependence and remote-service liability were seen as major drawbacks [#15648376] [#15643994]