After you have done a directory comparison you are provided with a table of results and these results can be sorted.
It would be useful if you could filter the results in place.
e.g. just show files with extension jar
This is different from using the pre-comparison filtering as this feature wouldn't do another comparison.
Essentially I am suggesting a type of filtering like Excels Auto-Filter
The benefit is that you can deal with certain file types first then move on to another.