Hi @pedro great thought and I actually completely missed the custom aggregations in my initial post. I think our feedback will be most valuable, if we can make it as specific as possible. Meaning, would you have more aggregations in mind you are missing at the moment?
I can imagine, that we will get function-backed aggregations at some point since they would give the most freedom.
However, I just like the no-code enviroment of workshop. So, what I find really interesting is, that the quiver pivot table is way more versatile when it comes to aggregations. When you switch that to formula view you can get really funky in terms of the math to apply (I did not find countif, but maybe the if else could be used).
The downside I found with quiver pivot tables is that they don’t allow row grouping (expandability) which is a mandatory need on pivots… 
