To those saying that it took too long to errata the BM, I would point out that there is a spectrum, and choosing to be overly conservative isn't necessarily the worst side of that spectrum.
To those who remember the days of 3.5 - how many times did Polymorph and Wild Shape get errata? 5 times? Something like that. It was almost impossible to know what the most recent version of these abilities were as they were constantly changing the rules.
Now, I, like most here I'm sure, recognized issues with the BM the first time I read the rules. I kind of came to the conclusion that if I played one, I would not be using the beast to attack (I figured it still might be OK to be used as a mount for a small sized ranger or as an alternative ranged attack for a sword and board ranger). In the end, I think I played a Wolf mounted Halfling BM once. It was OK.
The only problem with the class that actually was a problem was players who maybe didn't realize this, then had their ranger sit on his hands while his wolf lamely tried to bite enemies. This problem is still not fixed, nor does it look like it will be. Yes, the creature will have its attacks bypass resistance, but it's still pretty lackluster attacks.
Still, this weakness is notorious enough that new players I think are largely warned by more experienced players to avoid that build.
In the end, I don't think this was ever an emergency, just a reality that some choices are worse than others, and this was one of the worst.
Now Monks...
