I had sent in few more fw update requests to Brad and he added few of them but the shocker to me is on one of the requests I made for blocked shot response (AF tracking with lock-on). Basically my request was to have the lock-on setting to be applied for each AF area mode/ each button instead of having one umbrella lock-on setting. This way we can have a lock-on setting of 5 for wide area L, 4 for wide area S, 3 for 3d, 1 for another button set to wide L.
Brad says:
"Focus tracking with lock-on (both the Blocked Shot AF response aspect and the Subject motion): You should be aware that these settings have no effect on the camera’s behaviour if subject detection is on. This isn’t clear in the Reference Manual but I checked with Nikon and confirmed that those settings are only for the Dynamic-area modes. This is suggested in the following manual (go to pg 17 and study the table)":
https://download.nikonimglib.com/archive4/IPCyo000clhy05Z1yzY16X63lS03/Z9_TG_AF_(En)01.pdf
I have asked Brad if AF lock-on settings will have no effect whatsoever on other AF area modes like wide-area L/S even if subject detection is turned off.
Darn this is all getting too complicated now.