San Andreas was/is my favourite game of all-time, so this is ideal for me.
One thing of note is that the initial trailer for GTA: SA only showed Los Santos with the other cities revealed later. I'm not exactly expecting the same here, but a man can dream.
I liked the variety and scope of Saints Row 2, but it felt cheap and was really rough to play. Hopefully they've tightened it up for the third one, because I need more than being able to dress up in wacky outfits and beat people to death with dildos. Not much more, mind you.