UPDATED 24/4/2017

Yesterday's episode gave me an idea for suggestion.

IDEA: Emoji Planet, a new dimension for the TARDIS to travel to.

THE PLANET: would consist of plains of wheat. Basically a plains biome but with wheat planted everywhere. Other than the unlimited bread, the main point of coming here is to go to one of the various Emoji cities (thats what I'm dubbing them).

THE CITIES:

Made of: The city would be made of white quartz like blocks, an tinted glass (which would also be a new block). The reason for these blocks being new is because they are actually Vardi blocks. Upon being mined, Vardi will spawn (a bit like Monster egg blocks) and attack you. 

Rooms: There are several room types in the Emoji cities: Dining rooms, Corridors, Empty rooms, Farms, Bedrooms, Green houses and central control (in other words, the spaceship at the core of the city (where you can get Vardi)).

Obtainables: Iron ingots, Redstone and most importantly Vardi.

MOBS:

Vardi swams: Vardi are handy micro bots that can do a variety of tasks. They have two states: Natural and Tamed. Natural Vardi swams only spawn in the cities on the Emoji Planet and mostly just fly around until provoked by a player (info on this below). Tamed Vardi swams are spawned in by the Player and have a variety of functions including:

• Defending their owner (e.g attacking hostile mobs: Vardi do 2.5 hearts per second of damage when swaming around a player, meaing they aren't good at killing fast moving targets (e.g running players))
• Becoming a house for their owner
• Mining
• Farming

Tamed Vardi swams can only be obtained from the Emoji Cities. 

Emoji-bots: the Emoji-bots, like the Vardi swams, also have Natural and Tamed states. The Emoji-bots naturally spawn in the Emoji Cities and stand still until provoked (again, more info below). Tamed Emoji-bots are automatically spawned by Tamed Vardi swams upon it's spawning and act as a way to control the Vardi. Clicking on a tamed Emoji-bot will open a menu that will allow you to set the attached Vardi swam to do a task (list of task options above). Emoji-bots do not attack people, instead, when provoked, they hug people to stop them from moving, allowing the Vardi swams to easily kill them. 

Provocation: Natural Vardi and Emoji-bots can be provoked in several ways. The first way is by attacking an Emoji-bot or breaking a block in their city. This will immediately cause them to chase and attack the player. Another way is by going into a restricted area (the spaceship at the heart of the city) which, once again will instantly provoke them. The final way to provoke the Vardi and Emoji-bots is to stay for more than 5 minutes. The faces on the Emoji-bots will change every minute in order to reflect how close you are to being unwelcome. So, if you only stopped by to see a Simile, or get some bread, then you'ed better be quick about it. (thanks to h1226 for the timer idea (though the faces bit was me :P)). 

Thoughts?

Maybe the emoji bots would only start to kill you after a certain time?

 Thats an idea. Another one, would be that they only attack you if you go to a certain area or/or do certain things (e.g attempt to get Vardi or kill and Emoji-bots. Perhaps a mixture of all of these aspects.

Or maybe if you type ":(" in chat they will come to you and give you slowness, then summon a particle swarm that will kill you instantly

 That will be a bit more for roleplay as then it will be easy to avoid the massacre so then the player can avoid getting killed while getting the vardi. Anyway I like the planet suggestion.

It's actually a ship and a planet .-.

 Yeah. xD Ship on a planet inside a building of the vardi.

 I know that, but seeing as the building is built around the ship, it's not going to be able to take off, meaning it is effectively just another building.

Also, UPDATED THE MAIN THREAD.

Soooo, I've made the big update, so... BUMP!

Supported, although I would prefer if the emojis changed when you got hurt instead of being unwelcome, or you can give them money to be there for a longer time like in

the end of the episode

 Yes the emoji bots, they we so awesome but scary at the same time.

 This is meant to be an alternate city where the colonists were all killed and the Doctor never appeared.

I would have the emoji Bots Kill wou when you get hurt or running low on hunger