Enabling Subsets to be maintained from user interface or even a formula.

Sometimes there is a necessity to be able to update the Subset from the User interface.

For example when you add a new Equipment and you are using a list of subsets to limit the size and selections.

In this case it is only possible to update the Subset after you have created the list member. It is an inconvenience and something you can not explain to the customer.

Is there a good reason why we can not update Subsets from user interface or even make it a formula driven entity.

I am not adding the bulk copy here, same scenario.

Thx