Hi,
I think that two important skills are missing from the list.
1. Network virtualisation skills, such as the ability to deploy MPLS VPNs within the data centre and across your campus. This is especially true if you are building multi-tenant data centres for private and/or public clouds.

2. Software Defined Networking skills. Admittedly this technology has come from a low base but it is gaining increasing traction in the market place.

See this post for further details: