Hopefully in about a month I'll want to modify the rawhide (f14)
Did you mean F14? Is the devel freeze strict enough that this can't be
done for F13?
If that's right, how about introducing the compression option for F13
but with the default of zlib (since presumably that won't upset anyone
or break any rules because it'll be wholly backwards compatible), and
then changing the default to lzma for F14?
While there is some argument for making zlib the default for
compatibilty, I don't think that is a big deal and having the better
compression by default seems to make more sense to me.
Completely agree. It is rare to want to mount the image other than by
booting the USB stick, so as long as that has lzma support, it's not
really an issue.
Go for it. Blessings on your head.