> I'd like to see an optional logging feature that keeps track of which of the
> used compressors was most successful in a given round of compressing.
>

And another idea...

Let zipmax use the original zipped contents when it does the comparison between the resulting zips. That way, if you already have a bunch of zip files that were optimized using zipmax and 7 compressors and you discover a new compressor, you can just run it against that one compressor instead of all eight (original 7 + new 1).