So after reading through the rules for the second time I can see where this army lacks (no doubt it is deliberate with 8th in mind and the failures of DoC and VC) staying power.
The leadership of many units is a joke, especially the Bestigors without a character (the fluff here is worse than the Halberd one in the Empire book). In fact most of the units won't be able to deal with a lot of panic test without saying hello to the table board. Looks like a few of the special characters may be needed (but I dunno since I just read through these once).
How do you beast players deal with the loss of the reroll (undivided)?
Leaders like the Beastlord is quite a given because a general with LD8, which you get with the Doombull, and so few normal non monster units without Stubborn and ItP abilities, I can see some serious breakdown. Especially if you play fast moving with flanking tactics, which will derail you from the precious leadership of the general. You have a talent that gives you stubborn but that does not help with panic tests.
That does not mean the list is weak, but speed is of the essence and the units needs to get to their target fast to get the many nice bonuses combat gives them. Of course a smart general will deploy further back because I can not see how, for instance, an ambush of small gor or ungor forces will do any real damage (they can easily be shot since they lack the skirmish rule).
That is if they even get to the original point in the first place.
I see a better use for Harpies when it comes to warmachine hunting etc. And a use of the chalice at the right moment.
Of course no doubt, most tourney lists will be very few gors, and a huge amount of monters and skirmish ungors.
Yuk...