Why thank you! From my perspective, the variable defenses are indeed pretty key. But it is admittedly a lot to track (especially for the Guide running NPCs).
I'm working on a new edition that keeps the variable defenses but streamlines a lot of the other gameplay elements. If you're interested in playing and don't mind being a guinea pig for the new rules, I'll be running a few one-shot adventures for new players soon, so don't be a stranger!