We can templatize nodes in targets, but not parameters to function calls (at least not that I've found).

It'd be very cool to have that capability.

For instance, I'd love to have the ability to change the time period parameter to the summarize function using a drop-down in the filtering area or some other means of choosing for the wheel dashboard), rather than having to dig down into the individual targets in a graph (especially when there are multiple graphs on the page).