I have been wanting an Ork-oriented novel for a while. I think it was the Soul Drinkers series where they had a small section where some Ork Meks would have a sort of pecking order over who got first dibs on any salvage and then also the prolog and epilog bits from Purging of Kalidlus from the Ork POV. The Tau have at least a couple of books, Sisters of Battle have at least a couple of books, plenty of books from the POV of Chaos. The Orks, 'Nids and Necrons are about the only three that haven't gotten much love and the Necrons at least makes a degree of sense considering most of them are mindless automatons. Same with the 'Nids how they have the hive mind. The Orks though, are rife with potential for a Cain-style infusion of humor into the otherwise grim 40K universe.