This whole "lesser content for pirates" doesn't work, as seen in "various places" and ALL of the content for Sims 3 is available to whoever wants it, just at a slight disadvantage. Including that extra neighborhood, that EA was gloating about pirates not getting.
Rockstar gloated about it's $200,000 (or around that figure) anti-piracy and it was, for the most part, cracked in the same week.
Also, the aforementioned method of one person being classified as a legit copy, connected to Blizzard, and authenticating the other copies from it is a good idea. However, it also sounds like it's just waiting to be attacked by pirates. Blizzard just wants to make an end-all be-all of anti-piracy for multiplayer and they're experimenting.
There aren't alot of options, they just need to do it right...
Atleast they're considering LAN as an option though!!!
Honestly, Battle.net and the marketplace sound very exciting, and I personally don't really care if it has LAN or not... it's friggin' Starcraft 2!