1) Yes and yes. You can even do crouch throws, both of them, out of the armor dash.
2) Yes, 236A+G
3) 44A feels nerfed to me too. But I think he'll be more effective at zoning than in SC5 because JG is gone.
I think SC5 44B is now 3B, it's even better ! But the thing I liked the most here is the 33bA from SC4, hit high with a good RC transition... I loved that move in SC4. With how fast and tech crouch RC K is now, that's even better !