Show default/calculate for columns, same as formula for formula columns
When you press on Customise existing columns, you get a list of all the columns in a record grouped by column types. For the formula columns (and indeed references and selections), it is very easy to see their content by just browsing the list and without having to press VIEW or EDIT.
For regular columns it would be very useful if one could see the default/calculate field in the list of columns, just like the formulas can be seen in the list of formula columns.