Seems like adjusting BIAS / Filter is not an overnight task and more than likely will take months to get it almost right.
In order to get a handle on this over/under fueling during hot/cold IAT's, we could have a VE IAT Multiplier table.
Basically we'll dial in the VE (SD) on the same day with IAT's not veering off more than +/- 5 degrees, then start logging AFR % Error against the VE IAT Multiplier table.
This way if your optimal fueling is set up for 70* IAT and get stuck in traffic where IAT's easily reach 130* the VCM will automatically use the multiplier table with the VE Table.
I'm assuming this will require a custom OS, but I feel that it would "BANDAID" some of our BIAS problems for the time being.