All topics regarding TGB are a year old. Was the charter approved? I could not find it on sovrin.org.
I would remove the word "Routine" in this sentence "Routine decisions can be made via discussion on the mailing list (firstname.lastname@example.org), without formal votes" or the charter should define what "routine" decisions are and what "non-routine" decisions are, I think.
Having removed the word "routine" I would suggest adding a sentence that says "Any member of the TGB can request a formal vote on a decision". (In the hope that this does not lead to tons of votes initiated by member).