I don't like the precedent. There are lots of reasons a person may want to modify game beyond the given cheat codes. For example, the Starcraft (original) AI

I don't like the precedent. There are lots of reasons a person may want to modify game beyond the given cheat codes. For example, the Starcraft (original) AI contest works by injecting a dll into the Starcraft client which allows you interact with various elements of the game. Most anti-cheating mechanisms would detect this and would flag the user as a cheater. The first interaction I had with programming came from writing hacks to Diablo 2. I started out writing save game trainers and simple memory modification cheats. I graduated to more advanced hacks involving dll injection, OpenGL hooks, etc as time went on. This whole experience significantly influenced me into my current career. I'd hate to know that the current generation of young hackers growing up won't have the same opportunities to learn as I did.