Re: [Base Class- Intended teir: 2+- 3.5] Battle Monk
Your Flurry of Blows table doesn't reflect your text. (You need to apply the penalty to the BAB, so like -1/-1 at 1st level, +0/+0 at 2nd, etc). Also, you're skipping the extra attacks you're still getting from high BAB (This is why the normal monk didn't have full BAB). Your Flurry table should end like this: 20/20/20/15/10/5.
The AC bonus is fair, and the monk's light armor makes good sense, so I like that.
You forgot to mention the bonus feats in the text.
Otherwise, I like it. (Though it's probably just Tier 3)