Suggestion for improvement - export PDF with layers

I've been enjoying Fresco very much, but its a little irritating that the vector layers all come out squashed into one layer in the export PDF.  It would speed up workflow if all the layers in the Fresco file were exported as they are in the Fresco file so they can be easily turned on and off and worked on in illustrator. 

While the layers are kept when exported in photoshop, they are rasterized, so the vector advantages are lost.