I’ve have made this suggestion to Sonoff via the iHost Feedback.
The scenario: In the non-heating months I use the temperature information from a TRVZB to trigger a Sonoff basic wi-fi switch that operates a fan if the temperature is >24 deg C. I only want the fan to operate if the temperature is > than 24 deg C AND if the TRVZB is in ‘Keeping’ status. At present only 1 entry can be made in the IF field for a TRVZB. So my request to Sonoff/ eWeLink is to consider adding the facility to allow more than 1 scene IF statement for the TRVZBs. There must also be other devices for which this could be a desirable featuure.