I'll have to take time to go through those links/deck builds.
Tonight, I won 5/6 games (same deck as usual), the last one being a loss. It was almost a comeback, after knowing from the start I was far behind. The opponent's first turn, he played a 1 mana, 7/11 Vehicle, followed by a few very strong enchantments.
I got a neat combo off, on my last turn, reducing the opponent to 3 life:
Combustible Gearhulk, combined with
Flameshadow Conjuring.
A 6/6 artifact, with a 6/6 Haste artifact, both of which force the opponent to choose between taking damage or giving me 3 cards. It's a fun combo when it gets played, but does require 7 mana and survival. The Flameshadow Conjuring does provide some good opportunities as well, and Gearhulk has both filled my hand back up, and done up to 13 damage, winning a game (almost) single-handedly.
Edit: I'm not sure why that first site claims Combustible Gearhulk has been removed from Arena, as I'm playing with it in my deck. Must be old information, and they chose to put it back in.