Mission control is a perfectly comptent exposé. My beef is elsewhere.
On Snow Leopard, most of the time, I used only one space and, as I've been using it on a 13.3" MBP, my windows were always using most of the screen and I usually have more than one window of a given app open at the same time (Finder or Text Wrangler for example).
To see multiple app windows, my workflow was: 1. Swipe four fingers down (gesture for Exposé); 2. Select any window of any given app.
Now, I must use Mission Control: 1. Gesture for Mission Control; 2. Select the app; 3. Gesture for Exposé; 4. Select my window.
What used to take 2 steps, takes four.
It’s certainly a tradeoff but for me personally certainly the right one.
Exposé hasn't been good since Leopard. In Leopard, there were some simple rules.
- Every window on the screen is fully visible.
- Windows are sized proportionally.
- Movement from the original position was as minimal as possible.
Snow Leopard removed the second two by arranging all of the windows in a grid (iTunes is the same size as a tiny Adium window). Lion removes the first one.
P.S. There's a hack to change Snow Leopard Expose back to Leopard style. First thing to do on any SL install.
I think their goal was valid (trying to make Spaces a feature everyone is able to use) and they went into the right direction, their attention to detail, though, was seriously lacking.