Option to Open Data and Model in New Window
PBI Desktop has three main screens, Report, Data, and Model. It would be very useful to be able to open the Data or Model screens in a new window rather than paging over to it when selected.
When developing visualizations, and especially when dealing with many multiples of data-sets with dozens of source columns and then additional calculated columns, it is easy to loose track of which data is in each column. Being able to work on a visualization while having the data open in another window rather than flipping back and forth would make things much easier.