Yes I thought of this too. It does seem right that only people with ranks should be able to vote. After all, that's why the ranks are there.Well, in this case, you have reason. But, knowing cubecraft, non-rankers wouldn't be able to vote. I know what you mean by this because, for example, in quake craft and infection, everybody can vote for a map. However, it's a featured game, not a fix game, so, in this case, I would not think this could happen with minerware. Also, until the boss game, we should be able to have at least 10 or more seconds to vote for the game, so time should be a thing that would need to be fixed.
And the rankers vote should stay to 1, because the x2 vote happens when you have plus, so it should stay this way.
Though, I was thinking that because there's only a smaller amount of people that can actually vote at all in Minerware, everybody could have a chance in the smaller part in the end of the game. The ranks are kind of expensive and everyone might not be able to purchase Emerald or Obsidian.
Maybe, instead of the requerment of only Emerald and Obsidian, all ranks except for maybe Stone should be able to vote? That means that you do need to have a bought rank to be able to vote and more people would be able to affect the game (bossgame) as they'd like. This might even draw new people to purchase ranks which would also benefit the server.