Monday really needs to support Formulas with multiple mirrored values!
If you create such a formula, you are returned an error “Formula with multiple mirrored values will be available soon”, however there is no indication I can find anywhere on if this is even on the roadmap, or when it is expected to be available.
Not having this feature causes a LOT of manual work on our end, reviewing multiple columns to determine if an item is ready for the next stage in our workflow.