Firstly, this has been discussed on and off for a few years now in the mkt etc... So the OP isn't the first to come up its this cunning plan. Secondly, like I said, there's a logical argument for why the "step" should be lower nowadays. However, that said, it's still crazy, IMHO.
Finally, you need to recall that the money mkts are generally a little more complicated than just the Fed and its target rate. There are lots of moving parts. For instance, rates have actually gone up quite a bit this year, if you look at LIBOR (and similar). In effect, there's been a sneaky Fed hike or two, w/o the target rate moving.