Id consider that Game Over
#7 Expansion // Explosion The problems with Expansion are very similar to the problems with Invert
Weatherlight While there had been token-makers that allowed a player to spend mana to create multiple tokens over time, Liege of the Hollows was the first token-maker that builds the mana payment into a one-time triggered ability, allowing you to make as many tokens as you have mana to spend
Zamriel, Seraph of Steel Equipment decks often need some form of protection, which Zamriel, Seraph of Steel does okay
If Magic doesn't do something soon to define what "Pauper" is, exactly and precisely and in a way that's future proof, the Pauper community could fracture over the difference between Magic Online and paper rarities, and soon you'll have 7 different definitions of Pauper, and you'll need to start specifying whether you're running "online" Pauper in paper, or "paper" Pauper with one of six different legality lists
Green's spell section is pretty anemic right now, so I could see naturalize and KR hanging out a bit longer