Renaming columns in Blend after changes to the base tables

If I create a Blend of multiple columns, then the column names do not have a table name prefix unless there is a duplicate. However, after creating the Blend, if I add a column to the base table and then do a Preview again, then it does not let me rename the column and it is just too tedious to rename the columns everytime I add a column.


Is it possible to rename a column manually when you edit a Blend? How? If not, can we have that feature?