I'm not sure how much sense it would make to have a stress allowable for a laminate.
First, all you could get would be an average stress allowable over the entire face of the laminate. It would have no physical meaning. It would be simply the unit force divided by the thickness, but there would be no location in that laminate where that stress would be valid and it could not be correlated to a true material allowable stress.
Second, this average stress allowable would be different depending on what laminate you are looking at, so if looking at a quasi-iso laminate, for a given strain allowable, the stress allowable would be much different than if looking at a laminate with many zeros. It seems like in order to establish this display, you would have to pick a laminate at which you want to see the stress allowable.
The more appropriate thing would be to add laminate-based failure modes to the Laminate Analysis form, which we plan to do, and then you can pull up a particular laminate and see the engineering stress allowable for that laminate.