I've noticed a couple of spots where it's getting stuck on the Horde version - on the way to the first waypoint after the battle starts, it gets stuck on the edge of the floor next to the ramp. It's also having some trouble with the spikes along the front of the Horde base - especially the large spikes right on the building, the ones next to the gate, and the one on your left after you make the turn. It seems better once you die, but at the start of the battle, it's definitely noticeable.
This may be Tauren-specific because of the size, but if the hotspots could be moved a tiny bit further away from the spikes, and perhaps a bit of a straighter shot into the gate, it would be helpful.
I'll keep running it for a while and see if I notice anything else weird. Other than those snags, it's looking good.