* cleaner implementation
  - current implementation is not pretty (craptastic even)
  - probably mouse-based
* optionally specify 'gold server'
  - dc-specific gold server
    - default global gold server
    - no gold server specified = use current host
  - one xfer per gold server, or use gold server as an ordinary source
* use a single persistent connection to each host
  - fork child processes for each scp/rsync command
    - seems like a good place for GRID::Launcher
* progress info
  - report status of individual copies
  - GRID::Shell can help with this
    - GRID::Shell::Agent forks a process for rsync/scp
* rename ?
  - 'cascade copy' was probably a bad idea
  - GRID-Copy ?
    - google finds 21,200 for "grid copy"
* dry run
  - not sure how to do this
  - find + md5 + Algorithm::Diff ?