C'mon. To hit tier 4, you only really have to have one good trick. With good gear, feat choices, dips and proper op fu you can make a monk into a passable grappler or trip controller, maybe even DPR. Not as good as a fighter, and almost anything they can do a SS can do much better, but you can still hit tier 4 with more than 2 monk levels. It just takes more cheese to stand on.