Be able to insert a PivotTable or PivotChart from the Power Pivot tab in Excel's Ribbon
Currently, the only way to add a PivotTable or PivotChart that is based on the Data Model is to use the "PivotTable" button in the Home tab of the Power Pivot window. This button should also appear in the Power Pivot tab in Excel's Ribbon.
When I work with Power Pivot, I'll do all of the Data Model work first, using only a few PivotTables for debugging purposes, and once I am confident that everything is correct, then I'll go crazy with making all of the final PivotTables and PivotCharts. This involves a lot of back-and-forth with the Power Pivot window. Also, when I think of adding a PivotTable, I think of where it is going, not what it is based on, and so I mistakenly go to the Excel window to try to add a PivotTable, only to go back to the Power Pivot window.
I'd like to think that there are more people that work in a similar way.
Sergei Baklan commented
Kenneth, you may add based on data model both PivotTable and PivotChart from Excel sheet ribbon. Just in Insert->PivotTable pop-up window select "Use this workbook's Data Model"