Yeah I did a cave man test on a game where my vassal were defecting for no reason and it seems to have corrected their immersive decision making rpg experience so they don't leave. Good enough for me and please TW more testing next time you tinker with this stuff. Daily % is bad, they should be leaving because of actual, transparent and interactable reasons.Just ran a snowball test and not a single clan defected. Seems they've essentially just turned off defections.
So good news is that 1.8.0 wont ruin peoples playthrough with illogical defections but is not a solution if we want defections to actually occur.