The only reason we talk about the Power Nine and not the Power Ten is that Sol Ring wasn't rare
Getting seven Bobbleheads from including them in your deck, and copying them, isnt particularly difficult, but its far from automatic
The lack of Elvish Mystic or Delver of Secrets means that those lands wont be helping to power out extremely aggressive starts with whatever color of mana you need at the early stage of the game, but that doesnt mean theyll be any less played
What else would you call that but card advantage
The town payoff effect is also pretty expensive
While this lessens the extent to which I can hedge my bets by comparing my estimates to those of the hive mind before finishing my article, I think that it provides a better service to the community, as a whole, to have different perspectives at the outset that dont cannibalize each other