The most interesting thing to me is how much the empire population has dropped off. It used to always be one of the most popular armies (though never very strong). Now it's getting 1/3 the players of some of the other core factions. I think its the least played core faction army in the game.
I've noticed its presence drop off in the tournaments I've been too. It used to be fairly popular, now it's getting like, 1/3 the representation of dwarves, which are also a not terribly good and not terribly popular army.
Looks like more and more people are concluding if you want to win tournaments, don't take empire
OR
People are saying "The empire book is boring and bland, I don't care if I win or not, it's not fun to play"
OR maybe it's both.