From what i've gathered, reverse engineering is the real issue, and screwing with battle.net is an issue too, since i'm doing none of those things, i'm pretty sure what i'm doing is legal. It might not be something blizzard is going to suggest, but i don't think they're going to do a cease'n'desist either. But if they do, then i'll shut down the project, tho i think it would be a bad move, since my project might increase the sales of Warcraft III, because of renewed fun and features.
The only project i see blizzard might be having issues with is Project WarSoc itself, since it adds a secondary way to play multiplayer games.