Never gotten any beta invites, been a subscriber since 2004. That's 10 years of past history and payments done to Blizzard. So yeah they don't care about your history, it's totally random who gets betas. Luckily I am quite nifty with the internets so I always get one that I want through wowi, curse, ignprime, e.g. Just shame they, Blizzard, don't value certain members more than others, like addon authors this year. Was great for Cataclysm, wowi only required you to be an active addon developer and to queue for a key, that was great.