When designing a view: Columns with a computed value get a default alias starting with a "$" plus a number (e.g . "$259").
When pasting a column from a different view, I unintendedly can create columns with identical $-aliases. - This may produce side-effects like documents being shown in wrong categories or - hard ...
I like the option "Apply to all" in Column properties -> Header and Body tabs.
However IMHO it should not change the justification of the column text or header of all columns.
It would be great to have ability to use values of document fields in twistie image formula of ViewColumn. It is possible for column values, why not for twistie image formula?