First impression: it crashes. A *LOT* With no warning, I'm suddenly starting at my Windows desktop again. I think my computer can handle it... i7-930 w/ 6gb of ram, 1gb ATI card. All the latest drivers.
I've not been able to do much in the game because it never seems to get more than 10 or 20 minutes of time in the game before I'm booted right back out to my desktop.
That said...
I'm glad to see zodiac signs back. I hope they really help define who each sim is, what they're good at, who they like, etc. The new town doesn't seem very family friendly as it seems none of the homes have many bedrooms, parks lacking proper play spaces for kids, that sort of thing.
I am very happy to see the new objects both in buy mode and build mode. Really digging the fountain tool and the being able to place a pool almost anywhere.
Here's to hoping the crashtastic wonder of it is fixed with a patch, because I see a LOT of potential.