Trend should include "neutral" or "no new value" + update frequency

I really like the Trend platform but for me it’s missing something important; no new value. When there is no change to the value I’m shown the last “trend” which can be deceiving.

I know Trend is based on a Binary Sensor so maybe we should have a new sensor which has “on”, “off” and “neutral”.

I would also like to see the possibility to add “update frequency” where one can specify how often it should update.