I can guarentee you they don't remove features just because they want to market it all over again.
If you paid attention, you'd realize they completely remade the ga,e from scratch last year, so things that were in 2K14 (dirty pins, all the additions to the creation suite) weren't in 2K15. Now they're back in, and people can't be happy about that? There simply wasn't any time to put all that stuff back in last year, now they're adding the things that were missed, along with some cool new feautures.
Some people will never be happy, lol