Would it be possible to give a better indication that an actor has taken fatal damage? (A sound effect option or text indication?)
Sure! I can include that feature in the next patch. I'll be sure to offer both Battle Log and SFX options.
We have implemented this feature for the recently released Version 1.2.0 of the plugin (it is called Mortal Alert in the plugin parameters). Let us know if this is what you had in mind :)