First off, where I did say Marcus was doing anything bad or that K-State offense was a well oiled machine with or without Marcus in the game? Strawmen.
In oscar's first season, Rodney shot the ball 139 more times than anyone else. Last year Marcus shot the ball 169 more times than anyone else, this year, even after missing 3 games, he still has way more shot attempts than anyone else. It would appear that Bruceketball is offense that needs the McGruder and Foster's of the world to shoot a lot, or when it breaks down (which is a lot) for them to create and/or shoot.
Maybe Foster isn't getting as many shots this year because of many things, like $hitty PG's, but another factor is, he isn't doing the things in games within the structure of the offense where his teammates would anticipate him being open and thus getting the ball to him.