Congrats on the finish.

The Sharpshooter is teetering on the brink of the sideboard as it stands. He's been fantastic against Survival variants because of how fast you can get him in play. Ultimately, though, I've included him as a killer of smaller green creatures to prevent Progenitus from coming into play sooner. As it stands, he is certainly not going to be staying in the main list.

Figure of Destiny has pretty much become almost like the new MVP of the deck (for me, anyways). Every time I drop him into play he milks a Swords. And what is most cool about him is yes, you can Imperial Recruiter for him, but you can also drop him that turn because of his one-drop cost. He also gets big really fast and can be a bomb late game with all that extra mana sitting around.

As for decks that pack the Natural Order, it can be hard for Imperial Painter to stop it once it actually happens. This is why I've decided to run Ensnaring Bridge and Anarchy in my sideboard. Once they actually get Prog into play, these are the most efficient ways in dealing with him (other than combo-ing out yourself).

What I've essentially done is cut the Pyroblasts, Dragon Whelp, and SoLaS for a more aggressive intervention. With the inclusion of Enlightened Tutor, you can now essentially fetch for all the pieces of the combo as well as sideboard artifacts.

The Goblin Welder in my list will end up taking the spot of Sharpshooter. What will end up happening is subbing out one Mountain for a Great Furnace so that I can Enlightened Tutor for it or switch it with a Goblin Welder if need be. It makes the deck slightly more susceptible to Waste-hate, but I've also included several fetches to off-set that potential threat.