So far we've lost 4 people that raided consistently since ICC, all of them cited end game becoming chore as their primary reason for leaving. O_o
Everyone on our raid team (10 man) works full time or more, and we only raid 2 nights a week for a total of 6 hours, we're 14/16 at this time, but in Cataclysm we were able to reach some heroics at this point. Having to recruit people has definitely hurt us.
That said, I see the dailies as optional content, but I also feel a bit daunted as I really am all about valor capping, and I appreciated being able to do it all on my weekend in 4.3, really sad that Blizzard went back on that decision.
All in all I hope things are still good for sub numbers in February, I still love WoW just have a few disagreements with the direction as of late.