Oh, I'm sure it COULD be added, but the question is SHOULD it be added? Like the Nuke, V1, and V2, I don't think we should add any of those high-tech superweapons.
He-111 H6, H11/R1, and H16 would be best if we wanted to both cover it well, and give a good, semi-usefull bomber.
We could make due with the H6, and H11/R1, though the H16 would be nice for its improved amament.