It has been extremely useful in Magic ETL 2.0 to have the Add Formula Rule available in certain tiles such as the Filter tile or Group By tile. I would like to see it be available in the Join tile as well. This would make it operate more like a SQL join. For example, if I need to use a BETWEEN statement for my join key, I can't do this immediately in the Join tile, but have to add several additional steps before and after in order to get to the final result.
