As someone who wants both Alien 5 and a new AVP, it's weird to me that Blomkamp champions one idea, yet condemns the other. Both concepts have the same potential to be awesome movies.
There's really no reason to hate the AVP concept. It's a B-movie idea for sure, but so was Alien, right? Just like Alien, it deserves the A-movie treatment.
I don't know what FOX thought they were doing with the first two "vs" films, but those definitely weren't A-level treatments.
I've always wished that Aliens Vs Predator had been made as a sequel to Aliens. Similarly, I'd love to see Blomkamp follow up A5 with a new AVP. Would love to see Rip n Hicks to encounter the predators.