Modeling approach : HANA studio OR BW on HANA ?

Hello,

I have question on the modeling approach.

Scenario : We have to impliment Reporting system for a client. 30% fo the reports that business want can be delivered using standard BI contents and rest 70% can be delivered with some customization to the BI contents.

Client has liscence to use both BW on HANA & HANA native

We have 2 options for modeling

1) Use BW on HANA : Install BI contents and deliver all the required reports using standard BW contents with some enhancements.

Pros

• By using BI content we can save development efforts
• Using BICS connection BO reports can use BW hierarchies

Cons

• It locks client into a proprietary OLAP structure and also doesn't align with SAP's long term vision in terms of how HANA should be used
• SAP recommends to stay away from cubes, use granular DSO's, not engage OLAP for calculations & use self-service analytics thru use of Universe
• Not all the BI contents are In Memory optimized.

2) Use HANA studio for modeling : Install BI contents and consume all the acquisition layer DSO's in HANA (Analytic Views) and create calculation views based on these views and do reporting on these HANA models.

Pros

• No duplication of data (only one phycical layer and rest are views).
• In line with SAP's vision
• HANA Live contents can be leveraged

Cons

• HANA live contents are not matured as BI contents
• HANA hierarchies are not supported in BO tools like Webi, we can not expand and collapse hierarchies, which is possible using BICS connection on BE queriues.
• More efforts required for Modeling

So, what is the best approach in current date? BW modeling or HANA modeling?

What is SAP's vision on use of both these technologies?

Thanks & Regards

Sagar