Music is a prime example of that as well.. Look at all the crappy, repetitive, shameful music on the radio. Pure crap.
CoD is fine, but i think they should just leave IW to do everything.. tbh, they are the only ones making a decent CoD game. Treyarch's games are really not that good in all honesty. And they should do a new CoD every 2 – 3 years, this way, it would give them more time to develop it, and they could make a better product.
Or.. IW can actually make a NEW IP!! Imagine that..