Bundling our game for Android resulted in a 58,7 MB apk. I was curious about the default compression ratio so I manually repacked the apk using 7zip with the Ultra option (deflate zipfile of course). The resulting apk was 48,6 MB in size. That’s almost 20% improvement in size! So, my feature request is the ability to customize the default packaging tool and command line.
Yes. But it is also important that you get correct behavior on all devices. See this thread for more info: http://stackoverflow.com/questions/25425172/reducing-apk-size-by-re-zipping-its-content