2 - revamp API (make analogs for Unix fs access calls)
3 - add dircache list to tar handle
4 - support star format(s)?
5 - add support for POSIX.1-2001 pax format
7 - support reading from tape devices with different block sizes?
9 - make the libtar program a much more fully-featured tar
10 - move output.c and wrapper.c from lib directory to libtar directory