The supplied _chilkat.pyd is 8MB, which makes it rather beefy for distributing as part of an app.
Unfortunately it is not possible because the number of builds across all programming languages, across all operating systems, for both 32-bit and 64-bit, and for all the different versions of Python, Perl, Java, .NET Frameworks, etc. is extremely large. Unfortunately, to increase the number of existing builds by another factor of 10 is beyond Chilkat's ability. In addition, if Chilkat began provide separate builds for just parts of the libs, then it would open a "can of worms" and a potential support nightmare for issues relating to (for example) using an older version of the Zip build with a newer version of something else.