While I have no doubt this will bring them in oodles of money with SW fanatics who collect any and every piece of SW stuff they can find, they'll make double the money because people will also be forced to buy the basegame too.
But, I think EA would be pretty delusional if they think this will "bring over" SW fans to The Sims as an actual fan base. If they were interested in playing The Sims, they would already be playing it. Now it might make some of those people who bought TS4 in the beginning and abandoned it, start playing again, but I seriously doubt it will actually "bring in" that many SW fans.
