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First of all let me tell you how the document comes across to me. It appears to be an identification of a number of potential hurdles for enterprises deploying using hybrid cloud. The issues identify some options or mitigations for the issue. To the level where I am uncertain that it really is problem statement. The requirements list in section 6 appears quite high level and identifying some factors where at least some where limitations in implementations, rather than in standards. So, I don't see this document as a problem statement that results in clearly identifying the need for standards work in an area to address a set of issues with common solution. So from my perspective I think the document can really be focuses on informational document pointing out mitigations for issues. However, the document is quite wide and an enterprise will have to make choices based on its situations, chose cloud providers and other factors for how to deploy or evolve their deployment. Thus, I think the problem statement part of the document can really be eliminated.  

Also, I think it is a bit unclear if document is on the edge between a Informational document informing on existing solutions as mitigations, or if it actually recommend or prescribe usage of solutions in situations that might not before been envisioned or recommended. 


Additional comments:
Section 4.1:

"A Customer Gateway can be a customer owned router or ports
   physically connected to an AWS Direct Connect GW."

In Figure 1, is the customer gateway the CPE, or any of the other gateways at the DC or cloud provider? I would request clarifying the definition of the customer gateway.