I'm disappointed in there not being more grizzlies based upon who is playing the book
In terms of some of your enchantment selection: I personally find Mongoose Agility to be significantly more useful over the course of the entire match than I find Cheetah Speed. Have you considered adding another MA or two? Have you used CS as something other than a way to get into combat one turn earlier? I could see giving the bear the opportunity to ignore guards being more useful than CS.
I also agree with the tanglevines. With your spawnpoint putting creatures on to the field, holding the enemy in place will be useful. You may consider an astral anchor or two, assuming you can use your domination cards.
I would personally add another rouse the beast or two in there as well. It's cheap for the beastmaster, so you might as well abuse it.
Those are my observations for now, I'll try to take a longer look at it tonight as well.