Hi @Svetb, thanks a lot for the help, I really appreciate it 
!
I have set up something similar that uses product_type, payment_type and 10 other tags to let users be able to filter the data as they please. However, the reason I wanted to add a multi-value tag was because the product_type has grown into a lot of values (it’s actually somewhere close to 30) and users are required to tick almost 15-25 product_type values every time they want to get that certain data that they want.
In addition, adding a new tag for the multi-value Foo as a new, 13th, dropdown instead of the experimental tag would require me to rerun and backfill the entirety of the data; which I’m hoping to avoid.
Following your advice seems like the only reasonable options left, would you happen to know of any other way to show something of a similar nature?