All the binaries in /bin and /sbin should be linked statically in case the /usr directory is not available, or in case the system is having other problems. By dynamically linking these files, total system corruption can ruin your whole day.
The programs /sbin/sln, /sbin/sash, and /bin/rpm are statically linked - that's enough to get out of almost any difficulty. Statically linking *everything* in /bin and /sbin creates update problems.