MC Realms Subscription

It would be a good addition for the Minecraft Realms experience if one could purchase two realms subscription for a single world, therefor allowing 20 players in the Realm at once. It could be a 14.99 monthly payment or a discount rate for purchasing a "Premium Subscription". Also allow logs of who's logged on and when for the admin in order to see who's been joining and settle disputes amongst the players. I personally would like an option to password protect the Admin Commands in order to have an extra step for an admin to use commands or a feature to turn cheats on or off from the realm settings.