I love all these ideas and have a lot of thoughts on the second one in particular. I understand concatenating the function and existing column name as it helps differentiate a column in your current element from a parent element’s untransformed column, but when we’re utilizing a hygienic text function like Trim or Replace on a column we’re pulling directly from the parent , it would be nice if it would inherit the existing name. Perhaps a workbook configuration setting like “inherit parent names” (or something better, naming a feature is not my strong suit!) would be good.