It's a fair gripe. No idea why this feature isn't available, considering it was SO easy to do last gen. It makes downloading CAWs quite a bummer, because you instantly lose the immersion when that guy comes out to the wrong music and (last year at least) a totally generic entrance motion.
My classic 80s/90s Universe was an orgasm of nostalgia in 2k15. It was hard to distinguish the CAWs from the in-game characters.