This game is really not as bad as I thought it would be when I realized it was a social game. That said, I honestly believe it could have been much better if it wasn't. As it is though, I don't see it holding my attention for more than a week or so at most. If I could just go on missions without having to wait a half an hour I would love it, as that is a lot of fun, with building the base in between keeping it from getting repetitive. As it is, I spend more time staring at my compound. It's a shame really, as I would never pay for any of the features in this game, but if it were a full game, maybe expanded a bit and had a storyline, I would buy it hands down! Keep this in mind if you ever want to make a new version of this without the micro-payment, facebook style. I'm sure you'd still make a fortune from sales.
I think the shaking screen would be alright if you could make the camera not follow the ball at ground level. As it is the slight bouncing drives me a little nuts. Nice so far though, keep it up!