Trying to damage-race against WU Heroic is a hopeless cause, as is trying to defend yourself by blocking
Playing Mishra's Factory in something like RDW might cost your good and average draws a small fraction of a % (total stab in the dark but we will call it 0.2%) in exchange for a slight improvement to your weaker draws
Meanwhile, Sapphire/Steel feels stronger than ever with almost unparalleled capabilities to dish out damage while also benefiting from solid ramp and straight up card removal
For what should be obvious legal reasons, you cant create MTG cards to sell or distribute since WotC own all rights to the cards artwork, either though first printing rights or full purchased rights (I think the former is the case)
In short, you can put yourself in a commanding position in the game
I think it will be good for the format due to fast mana such as Simian Spirit Guide, Tron Lands and Bouncelands being viable in the format