We work with tables that need to display the data in a format that is meaningful to us. Default display in grids doesn't cut it these days.
Allow us to add custom display formats for any field including binary. This could be done by maintaining a small embedded database per table and column. Then allowing a dialogue to select or enter new formats.

An extension to the configuration dialogue for date time display could be a starting point.

Once done, this configuration can be applied to any column and any table.

Doing this would instantly cure all the feature requests for display format changes.