I have not gotten to testing C7 (or RHEL7 for that matter) yet, but I expect to need the NVidia driver (from elrepo) on them and for the drives to be encrypted, SO … What kinds of issues do the proprietary drivers and encrypted partitions together seem to be causing?

Are your problems all related to:
https://www.CentOS.org/forums/viewtopic.php?fI&tG460
http://elrepo.org/bugs/view.php?idI6
https://www.CentOS.org/forums/viewtopic.php?fG&tI304&start

Or are there other issues?

Thanks for the feedback.

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I am not a contracting officer. I do not have authority to make or modify the terms of any contract.