Phil - I wasn't suggesting that you use the Ens.Deployment.Utils but rather the Studio.Project utilities.  This will allow you to put in any specific classes that you wish to include (including the Production definition which should include all the pointers to the new BOs, BPs, and BSs) so that you can cherry pick what goes into your next environment.  I am not familiar with the Ens.Deployment.Utils so I can't compare the approproaches