Currently, when programming families, most of my dimensions and integer values have to be duplicated. One for the user desired input, and other for "what to do if the user value is less than, etc.".
To add the ability to narrow the accepted values through an additional column.
Parameter - Value - Formula - HERE A NEW - Lock
This option can vary depending on the type of parameter, say:
if Number - Maximum, minimum, etc.
if Family Type - The Family (not only the Category) from which the dropdown list is display.
This is the general idea.
Regards.