Upgrade repository format for trunk?

Hi all,
  I've noticed that the bzr repository for trunk is based on an
ancient "pack-0.92" repo format.
After a few emails with Robert his recommendation is to upgrade the
repo format to format 2a .
Does anyone see any reason why this should not be done?

A word of warning for the person who's going to be doing it: the
conversion process takes more than the half gig of RAM which is the
per-process limit limit on west.squid-cache.org, so it will fail if
done on west by unprivileged users.

Thanks

-- 
    /kinkie