You early adopters paid for the expansion to let bioware know that was something you wanted. To pay for the devs who put hard work into making it. for 6 months of playtime new players coming in did not have access to. Also, preorderers also got a few nice things that new people will not have access to.
but not, lets complain about the people who JUST bought it getting a refund instead of the people who had it for half a year (because that makes sense.) Also, lets forget the pros coming out of this: a larger community for stuff like tfb, snv, tc, and the new daily area. More people for 55 pvp and hm55 flashpoints.
Thank you Bioware for giving some of my guildies the ability to endgame raid with me, and enjoy the game as much as i do (most of the time.)