a) has been fixed in version 1.3.5-12, see #289616 b) if you insist ;-), this should be forwarded upstream...
c) changing default to --rsyncable is not an option (IMHO) because it would generate different archives than a stock, self-compiled and other-distro's gzip, which is obviously not a good idea. I think this bug should be marked "wontfix" or forwarded upstream. Regards -- Jérôme Warnier FLOSS Consultant http://beeznest.net