Gargadon is generally great but it does have some polar issues and some longevity ones
Emrakul, the Promised End, and I think having Emrakul at number one over Elder Deep-Fiend was a hit, even though it was controversial at the time
Madison Li is one of the brightest scientific minds of her time, spearheading advanced research in The Capital Wasteland and The Commonwealth
Of course, at that point, the +1/+1 will start over-performing its hasty counterpoint, but thats also three turns that the opponent could remove it from the board
I know you've allowed a little more higher CMC creatures, but I think one strength of your deck is that overall it is still low CMC and flexible
Thanks for reading guys, and keep pumping your double strike warriors