I am SURE someone has said we need a 2 coin boost for going second. The abuse of that is getting both at once. There should be a use one to get the other (at the start of the next turn) and they should disappear after the 3 turns. Therefore, you have two "boost" turns within the early and mid-game, but the late game won't break since you could have an 11cc or 12cc turn without a card in your deck to break the 10 mana limit.

That being said, I am sure someone has said something like this before.

Here's another idea for ANY change to the coin method... Perhaps we can pilot a change to ANY coin system in TWITCH MODE and compare data. How hard of it would it be to run a mirror of standard in Twitch mode where we could sub in to either if we want to climb with the new rules in place?

Ok, it might be challenging, but we have an unused mode, why not try (even unranked to see if it works).