[RFC] git branch --status ?

Hi, all,
  I'm considering to do a feature patch that is useful for this scenario:

$ git remote -v update
Updating geko-ceph
From git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client
 = [up to date]      for-linus  -> geko-ceph/for-linus
 = [up to date]      for-next   -> geko-ceph/for-next
 = [up to date]      master     -> geko-ceph/master
 = [up to date]      rbd        -> geko-ceph/rbd
 = [up to date]      unstable   -> geko-ceph/unstable
Updating newd-ceph
From git://ceph.newdream.net/ceph-client
 = [up to date]      addr_cleanup -> newd-ceph/addr_cleanup
 = [up to date]      auth       -> newd-ceph/auth
 = [up to date]      bookkeeper -> newd-ceph/bookkeeper
 = [up to date]      cephdev    -> newd-ceph/cephdev
 = [up to date]      for-next   -> newd-ceph/for-next
 = [up to date]      master     -> newd-ceph/master
 = [up to date]      msgr       -> newd-ceph/msgr
 = [up to date]      osd-timeout -> newd-ceph/osd-timeout
 = [up to date]      pgcache    -> newd-ceph/pgcache
 = [up to date]      pgcache2   -> newd-ceph/pgcache2
 = [up to date]      pgcache3   -> newd-ceph/pgcache3
 = [up to date]      rbd        -> newd-ceph/rbd
 = [up to date]      rbd2       -> newd-ceph/rbd2
 = [up to date]      reconnect  -> newd-ceph/reconnect
 = [up to date]      unstable   -> newd-ceph/unstable
 = [up to date]      upstream   -> newd-ceph/upstream

after this kind of remote update, usually we want to know:
1) which remote branch is the latest? (then know which branch is most valuable)
2) the latest commit information of every branch (remote & local) ?

I'd like to use "git branch -a --status" to achieve this feature, something like:

$ git branch -a --status

git branch -a
  master [%h %an %ad %s]
* new33 [%h %an %ad %s]
  remotes/geko-ceph/for-linus [%h %an %ad %s]
  remotes/geko-ceph/for-next ...
  remotes/geko-ceph/master ...
  remotes/geko-ceph/rbd
  remotes/geko-ceph/unstable
  remotes/newd-ceph/addr_cleanup
  remotes/newd-ceph/auth

So now for everyone here,
1) how do you think it's useful?
2) if some current command with some switches has done the goal?
   (then I don't need to implement it,)
2) if not; which command switch (other than "branch --status") do you prefer?
3) implementation suggestions?

Thanks & Cheers,

-- Cheng Renquan (程任全), Singapore