Nice, good to know something will fill that void.
I must be the only one who hopes it's NOT a thrill ride though. SDC is about one marquee ride away from being a typical theme park with some craftsmen on the side. Even though we've discussed the issues spurring their new developments, I'd still rather they go the other way. Not that I'd really complain either way.
An expanded AM concept with a better theme and more activities would be great. It'd fit in with the park, be unique, be family friendly, and offer something to do other than rides. The remaining tower is already set up perfectly for a dual zip-line.
As far as rides go, we may see the Balloons or a carousel added back again with this expansion, which would go over great as well.
I still think the next marquee thrill ride won't be until 2012, but I expect it to be SDC's long awaited huge addition.