Well, I just subscribed to this topic, for what it's worth, but I'm out of the loop. Is D&D still so influential in the hobby as to dominate theory discussions? I thought most modern systems were PbtA-inspired instead. Even the OSR movement appears to have died down from its peak a number of years ago.
As for specifics, my own rule systems are designed for computer games (though they're systematically described in tabletop terms), which probably makes them a different beast. And it's been a while since I last wrote one.