All the above sound awesome!
I'd also love a way to put the same panel of filters and parameters onto every sheet so that these can have a consistent look and feel (and be easy to change this look and feel) on all selected sheets where the panel (container?) has been included. So, a master container of filters and parameters that can be plopped wherever necessary and look the same on all pages.
Also, the new capability to include bars and other graph visualisations in a column chart is great, but why do the headings (axis labels) have to be at the bottom of each column? Is there a way to make them flip to the top without creating a dummy field as a dual axis?