Would be great to be able to support for trellis chart (aka small multiples), either natively or a pre-built custom chart.
For bar, line and pie charts it would be very useful to add faceting to show individual charts for specific values of a dimension (e.g. revenue over time by country but facet by product category).
Holistics has a nice implementation of this that would fit very nicely into the existing UI as a separate section like so:
Hi @Mark_Shilton,
Welcome to the community! 
I wanted to let you know that I’ve merged your post with an existing feature suggestion related to chart faceting (also known as Trellis or Small Multiple charts).
We really appreciate your input and will keep you updated on any progress or plans to support this feature.