VGMaster9, as a law student and an (old school) gamer, I think you could have something. You could have a case on the grounds that what is currently being sold as the Dungeons & Dragons Roleplaying Game is by no reasonable gamer's standards a Roleplaying Game, much less D&D.
There is no established standard for what a roleplaying game is. And if there were, D&D 4e would,
without question or room for debate, qualify. Either that, or every JRPG on the shelves would be suddenly made vulnerable for suit, along with almost every western video game RPG and the majority of published tabletop RPGs. A win for you would cause serious and irreversible harm to the hobby you claim to enjoy.
Furthermore, Dungeons & Dragons is a trademark registered and owned by Wizards of the Coast. More precisely, Dungeons & Dragons is
six live trademarks, filed and/or held individually by Wizards of the Coast, covering the trademark's use on fantasy adventure novels, fantasy art posters, video game cartridges and video output games, t-shirts, equipment sold as a unit and including a rule book, printed playing aids, and dice, for playing a parlor type game, and printed instructional booklets for the playing of fantasy war games. You cannot sue them for the use of their own trademark in association with these products, and these trademarks cover all physical material published to date for D&D 4e. As long as what they slap the Dungeons & Dragons name on falls into one of the trademark filings mentioned above, Dungeons & Dragons is whatever they say it is, and you have absolutely no say in the matter.
In other words, if you proceeded with a suit, the two outcomes would be:
1. You get laughed out of court, and shamed for placing such a frivolous burden on the already taxed civil court system. (the more likely outcome)
2. Your case is accepted by Bizarro Court, which agrees with your assessment. The entire RPG world is turned on its head and nearly sued out of existence for false advertising thanks to your horrifyingly misguided efforts. (an outcome so unlikely as to be reasonably viewed as impossible)
You will have either earned the passing or eternal enmity of gamers everywhere. Pat on the back for you.
Oh, and since you would be utterly unable to show evidence of damages, the only (injunctive) relief you could get out of the whole process anyway would be for them to drop the term "Role Playing Game". I shudder to think of what the requirements your own personal definition of a Real Role Playing Game would impose, and how precious small your universe of Real Role Playing Games must be.
Of particular interest to this claim would be ESS Entertainment v. Rockstar, Galoob v. Nintendo (which establishes a customers right to modify a product they have bought, something which WotC took away from you with the GSL) and any of the many suits filed by Palladium, which do define a roleplaying game in a legal sense. if you wanted to mail me your claims I would be happy to talk it over with you.
No.
The cases you cite establish that the customer has the right to modify what they own. Wizards has, in no way, prevented you from modifying the books you buy. Furthermore, they have gone so far as to establish guidelines by which
you may create original material using their own hard work in developing rules and sell those original materials for your own profit. It is important to note that this is something they absolutely do not have to do, and something that is nigh unheard of in the world of entertainment (When was the last time you heard of a major video game blockbuster issuing a blanket license allowing fans to create
and sell mods for their game? The only thing I can think of that comes close in recent memory is Valve's Team Fortress 2 promotion whereby fans were able to create in-game items and receive a portion of the proceeds from their sale. And really, given the general goodwill towards Valve, I'm sure WotC would be
happy for you to lump them together like that). Anyone who views this rather gigantic gesture of goodwill on behalf of WotC as deserving of suit is spoiled rotten.
You have no legal grounds, whatsoever. Please don't even try
looking for legal grounds. It is, frankly, disgraceful. The idea that there are gamers out there
who are seriously considering this speaks
far more poorly for our community than it does for the companies we choose or choose not to support.
tl;dr stay in law school. You have no business offering advice on legal action.