Allow for Commerce & Traffic metrics in same Reportbuilder block

[#1]

Curren Reportbuilder functionality does not all for Traffic and Commerce metric to be in the same block. One of my most commonly run Excel reports is Reportsuite summary across a variety of metrics (pv, visits, visitors, revenue, order, units, avg time spent, carts, blog comments, etc)

This currently requires 2 blocks in Reportbuilder, but only 1 block in ExcelClient. Reportbuilder should be expanded to allow different types of metrics to be in the same block

[#2]

+promoted and spoke to Adobe about this... I think this is a huge omission from the API, and as a result, ReportBuilder, as it's a step back from automation/efficiency when you consider ExcelClient (or for that matter, DW, Discover, or SC15 itself).