Does it make sense to compress a rootfs.gz to a 30MB file, if at each boot time the file is extract ? It's just a waste of time at boot. Why the default format is not the uncompress one ? For sure , the 100mb's hard drive is over for long time, no ?
For the lowRam version I see the advantage (keep it compressed in RAM), but not for the default version
I think the aim is to make it fit on a Mini-CD. The decompression don't take that long if you compare it to other uncompressed mini-distro like puppy 5 (100MB iso).