The only way there will ever be a warhammer extension from me is if they decide NOT to use Punkbuster. It is much worse than world of warcraft's "warden", and honestly, it's so intrusive on the computer that I don't even want to install the game PERIOD, let alone try and figure out how to get around it.
The game in beta isn't that impressive anyway, and even Lax isn't sure how to get around Punkbuster right now, it would take an obscene amount of work. And, even so, there would probably always be the "Ban waves" where they figure out what we're doing and get around it. I don't want to deal with people using ISXWAR for 3 months and then suddenly everyone losing their account in one day.
Look forward to other games. Warhammer is for the World of Warcraft burnouts...and it might entertain them for a while. If you're not a WoW fan, you'll be tired of it after about 2-3 months.