I suggest more accurate combat log. The game constantly records actions and values to memory from which the log can be dumped to file or viewed in-game.
Recording to circular buffer in compact binary format, not as clear text as in the current combat log. Circular buffer 10 minutes or longer (for 3 h runs?). Both combat logs may co-exist.
The reasons:
-Combat log should have e.g. health and endurance values
-Be longer – like last 10 minutes
-When dumped to file in text form, an external program can be used to filter data and e.g. sum up the total damage
-Possibly directional damage information – some skills depend on positioning
-3D positions and orientations of player and attackers
-When a skill has multiple targets, the data could be filtered to show what and where was hit – e.g., if mesmer want look at success of shatters
An extended combat log is suggested.