Honestly, this post is the first I’ve seen this term used in the forum and I’ve no really good concept of what it really means.
I wonder why? In Wikipedia, the duty cycle (aka power cycle) is explained as " is the fraction of one period in which a signal or system is active". It is a common term, and AFAIK the 1% limitation applies to all devices signaling on 434 and 868 MHz, including MAX!, Homematic, Intertechno, but also Z-Wave and probably Zigbee.
Yes, the gatekeeper is not the right design pattern. What I probably need is a proxy item that delays sending the command for a half a second or so, waiting for more changes during that time and if so, sending only the last value. Will post when I’ve got it together.