I bet a real combat log is in the works. Theres allready enough games out there to show what a good combat log can help to make sense to everything happening in the game.

I guess the design of the C-log for BG3 is, like a good inventory managment, key to success of the game.
The Itemmanagment and Statpages are better in PAtch 7 then anytime before. So its work in progress and priorities are the gamability then the design how to present the information in a log.
Also the programming of a combat log can be dependant of final version of Interface/Statscreen/inventory managment etc.
When the first is gold status the combat log is not far away.