If you want to start a legal suit you have every right to try, but you will not win. The legality of Bungie's EULA is valid. People can only be protected from unfair contracts if the following are present. 1) Incompetency or illiteracy on the part of the contracted. 2) If any information is withheld from the contracted party. 3) If the contract is void due to changes in the contract that the contracted party is unaware of or not given explicit notice of such changes. 4) If there is any present or immediate danger to either party. For online EULA: 5) If the contracted party is not old enough to consent to such agreements, and cannot give legal consent. 6) If the contracted party is not given adequate notice of such agreements or a copy of said agreement is not made readily available. 7) Clear and present danger to security of the contracted party. 8) If the agreement is made while either party is in a state in which the agreement is made without their consent. 9) If the agreement is not updated and given to the contracted party to agree upon expansion of content or update in online services. The point is, is that this has already been decided through other games with similar situations like World of Warcraft and other MMOs. Expansion of content and changing of content is well within the rights of the games corporations. Besides the legality of it, they have more money and much better lawyers.