...So it makes perfect sense to log these, doesn't it?
No, I personally don't think there is any point in wasting time and effort scanning files of types from which threats can not be launched, and even less point in logging the ones that are missed (apart from if you want to carry out a one off test as per my earlier post to get a clear picture of what is occurring).
Those of us doing video editing generally have large data drives with lots of very large .avi, mpg etc files and it would be absolutely pointless spending the time needed to scan those files. I also see little point in having a report generated for every scan showing infected items, as these will be displayed at the completion of the scan anyhow.
So in short, I actually think the predetermined and default settings for the Quick and Full System Scan in their present form would be fairly optimum for the majority of users, and those who really want to scan all files can do by setting up their own custom scan.