Thanks for the comment!
Our house rules ban
Sol Ring and
Cyclonic Rift in addition to the official list.
You're definitely right about
Meekstone. That was a bit of a budget omission since
Crackdown provides a similar effect. Woulkd definitely add that one in for an optimal list though.
Orchard seems fine, but the deck runs quite a lot of double-colored-cost cards, so I'm not sure if one less tapped land is worth the risk of not being able to produce white or black.
Darksteel Mutation is a great card, could defintiely see running that over one of the more suboptimal removal choices.
Not the biggest fan of Mana Rocks in G-based decks because stuff like
Bane of Progress is running wild in my playgroup. I'd consider adding
Edge of Autumn for more consistent T2 landramp or
Utopia Sprawl /
Wild Growth for a T2 Doran first, if 37 lands turns out to be one too many.