Subforms in stateless forms

Subforms in stateless forms

I think the title says it all.

We need to be able to add subforms to stateless forms. Currently the only workaround is to create a Form and delete each record upon submission of the form.

I need to build an interface to update our inventory. Basically fetching some records, displaying them in a subform, for my users to update the quantity on hand. This can be done using the workaround but using a stateless form makes so much sense.

Why can't we have subforms in stateless forms? 

PS: not a priority, but would be nice.

B.