Allow formula fields to be linked with other tables
Any formula field should be allowed to be used to join with other tables, of course, as long as all possible outputs of the function are of the same type (numeric value or text)
Specifically for Views -- would be ideal. I'm not sure if the original proposal is for joins in SQL statements in calculated fields (which would be nice too) or specifically referring to joins in Views. The latter would be most helpful for us.