[Yossar]

Even if you choose to hide the formulas, some people will always try to figure them out from empirical evidence. With the Diablo series, Blizzard tried to hide most of the inner workings of the games, but those games have some hardcore fans and even the most obscure formulas eventually were discovered. I guess some people enjoy trying to find the formulas, but my feeling is that given enough time and enough people working on it, the formulas are all going to be known eventually, so you might as well make them all known and give everyone equal access to the information (instead of just people who hang out on the same forums as the hardcore researchers).