Oh and the Mag nerfs are pretty severe between the RP damage and bottle-crowing.
He was already falling off, but I definitely think he's out of the meta now. More Enigma picks?
And the bottle-crow nerf should prove to be interesting. You'll probably want more sustainable heroes in mid, so expect the pool to narrow and have a lot more QoP, Skywrath, etc.
Again I really dig the DK change, though you won't really be able to run him mid like the Chinese teams have been, so kind of a mixed bag for him. He's going to wreck team fights mid-game though with AoE poison.