At least I'll be able to partially re-create some of Sims2 Castaway.
Edit: Hmm...I do wonder what new collectibles and harvest ables there will be. Certainly seashells, and treasures from dive sites, but I wonder what new plants there might be, and how they would fit into new and current recipes. Being a tropical island, I thinks its about time we got oranges and pineapples. Then we could have like..pineapple upside down cake.