As another Brazilian, good riddance to that crap. The current standard is so much better. Anything that is compatible with the American standard is automatically a mistake. Now if only we could standardise the whole country on 220V and drop the need for different 10A/20A sockets…
It’s nothing fancy, but I have phone alerts if any windows are open when the heating comes on, and I also use the average temperature inside the house as the input temperature for the thermostat (sensors in several rooms are averaged and published via MQTT to a DIYless thermostat).
My plan going forward is to add ZigBee TRVs to the radiators in each room and automatically close any that are already at or over the target temperature.