Decimal point in numbers columns

If you use the customise numbers option for a numbers column you can select a unit symbol and direction.
What you cannot select is the number of decimal places to display.
Most currencies display to two (2) decimal places.
Can this be added as a default or an option?

When the numbers column is chosen to have a number format that is a currency ($, €, £) the number column should default to include 2 decimal places (Eg. Should show $23.70 instead of $23.7)