"compliance, audit, segragation of duties,"
These are organizational and regulation questions.
They are independent of the underlying technology but depend on the business context.
So how shall SAP provide guidelines for that in relation to a technology platform?
Using SAP HANA doesn't change any of those three aspects.
An idea of what kind of roles could evolve around a SAP HANA system can be found in the technical operations guide which is part of the standard documentation.
However, this doesn't give a complete IT operations organisation blueprint - which is basically what you are asking for.
Concerning statement 5): HANA Studio lets you do whatever you allow the user to do.
That's - again - no different to any other platform tool out there.
- Lars