First, I would make all X-Men readers read Harbinger. Then I'd make Conan and Iron Man readers try X-O. Then Punisher fans would read bloodshot. And on and on. I would not force them to love Valiant, because I learned in the first arc that making people love you is just plain wrong (Kris is still mad about that). But, I'm confident that once I've forced them to read an arc or two they will love Valiant of their own volition, because Valiant books are just that good.