This week we had two major features that were released into the site.
This allows users to select a range of values within a data set and save this range so that it can be used across visualizations. For example you can zoom in on a scatter plot and then "Set Current Filters" which makes the data that appeared on the zoomed chart appear on all the other visualizations.
Now when editing fields you can drag to reorder them. This new order will appear when looking at the fields in the visualizations.