That's one way to work around the limitation of not being able to tune the torque management tables. You could also play with the torque based throttle limiting under "Airflow -> Electronic Throttle -> Torque Based" - you can grab the values out of one of the base calibrations as a starting point - that may also help with some of the harsh shifting under light acceleration.
Looked at your log, definitely different behavior than what I've seen, however the end effect is the same: as your Knock Feedback goes to zero, your knock learn decreases by the same amount, so Knock Learn + Knock Feedback is still the same total value. For example:
At 00:11.406, Knock Learn is 18.1, Knock Feedback is -3.0, Knock Learn + Knock Feedback is 15.1
At 00:11.626, Knock Learn is 15.0, Knock Feedback is 0.0, Knock Learn + Knock Feedback is 15.0
Knock Learn is still adapting at WOT (goes from 15.0 to 15.7 over time), and you have a few instances of Knock Feedback (ex., 00:15.786 has a Knock Feedback of -0.2), so everything is otherwise working as it should.
To answer your question on advancing the timing further: you'll need to do some more logging to see if Knock Feedback at WOT continues to learn up (setting your Learn Init higher will reduce the amount of driving you'll need to do for this) - if your Knock Learn reaches Learn Max you can bump up your timing tables. Keep in mind, even if it doesn't have knock, you don't want to target timing beyond MBT, without a dyno I'd work with the factory MBT tables ("Spark -> Advance -> MBT").
Typically, I log Knock Feedback vs Load/RPM (
Attachment 96923) to try to identify if there's a problem cell - based on your log, logging Knock Learn + Knock Feedback seems like it may be a wiser choice.
That's correct, any time KFB is < -3.0 timing is being pulled either in anticipation of, or in response to, knock
Commanded AFR dropping at WOT is typically a result of Component Protection (aka Cat Overtemp Protection or COT) - you can find the fueling tables for this under "Fuel -> Temperature Control -> EQ Ratio