The paper version of SENDA presented the user with a nice and regular, fixed sampling rate, stream from the sensors, but this is essentially a lie: Sensor sampling rates may change all the time. Ask the users if they want the lie or an irregular but honest stream of if they want it configurable. Do not just use the last known sensor value in the "I want it regular" case but maybe consider resampling.
The paper version of SENDA presented the user with a nice and regular, fixed sampling rate, stream from the sensors, but this is essentially a lie: Sensor sampling rates may change all the time. Ask the users if they want the lie or an irregular but honest stream of if they want it configurable. Do not just use the last known sensor value in the "I want it regular" case but maybe consider resampling.