JMS Big Bang Tespia Open For All (?)

Speaking of the law, decryption, and whatnot - I'm surprised you didn't say anything about my program here.

Same thing as your encryptions: legal if the material in question is under US law.

Creating an alternative patcher to do the same thing the normal would've done wouldn't violate any law.
Technically creating your own MS client would be legal too, although against the TOS.

No.

Noncommercial use is invariably fair. Not true, though a judge may take the profit motive or lack thereof into account. In L.A. Times v. Free Republic, the court found that the noncommercial use of L.A. Times content by the Free Republic Web site was in fact not fair use, since it allowed the public to obtain material at no cost that they would otherwise pay for.

Extraction data cannot be obtained in-game but the game experience can. In fact the entire business model is based on providing gaming experience for money.