Add the ability to compress the encrypted files.
Actually this idea is from a comment @Timothy made regarding the suggestion to "Support random end-of-file padding, so the original file length cannot be determined".
Supporting the compression as well as the encryption of files in the Boxcryptor folder would provide even more security, save bandwidth, and reduce the total number of bytes stored in my Dropbox (as well as on my computer).
Yes, this works with EncFS.
It's called fusecompress.
I don't think this would be compatible with EncFS...
Daniel C. commented