I haven't had a chance to use it yet, but https://github.com/mhx/dwarfs https://github.com/mhx/dwarfs claims to be times faster than squashfs, to compress much

I haven't had a chance to use it yet, but https://github.com/mhx/dwarfs https://github.com/mhx/dwarfs claims to be times faster than squashfs, to compress much better, and to have full FUSE support.