In every campaign I have played so far the wood elves have far and away been the worst part in every conceivable way. I am more scared to invade them than any other faction(that clearly makes sense right...), I am less scared of chaos invasion than fighting them, they do nothing which ads zilch to any play through, I have never seen them lose to anyone and I would rather bash my head into a wall than play out a battle with them. It also helps that the only useful advise on the forums is "make 4 stacks and auto resolve each battle".
I guess they were worse in the past and are getting an update currently. But god, I have no idea how you botch a race this badly.