When Power Query --> Get Data / Query, Power View --> Report, why not Power Pivot ??

[ashishrj]

Why isn't manage section for data modeling and relationships not as good as Power Pivot? Power BI for Office 365 (Excel 2013) has a very good data modeling feature using a seperate Power Pivot window and easy GUI and access for data modeling / relationships. Creating measures and calculated columns in report section makes it quite uncomfortable as output cannot be viewed unless dragged to report. 

[andre]

My guess it's because the focus was on developing NEW features the rather than replicating old ones. I think it's a safe bet that we will see many usability improvements as the product matures.

[WillT]

You probably figured out... We made changes to the experience so you now do have a view that is 'like PowerPivot' - the Data View!