MC Concepts - Tribal Village Structures

Hello there watchers, stumblers and villagers! Welcome to an idea of sorts which for once, isn't a mob! Instead it's a collection of structures for something that for now I'm calling the Tribal Village, a collection of buildings that can be found in Mega Taiga Biomes. Now, I decided to make these on a flatworld, which might explain the giant Testificate village in the back.
BUT WHAT'S IT FOR?!?! A new sentient form of life? Ghosts? More smegging Testificates? Has it been abandoned? I dunno, but I want to hear your mad ravings in the chat because I'm not telling you until Friday

Anyway, read below to find out what the structures (from top to bottom) are:
 Chieftain's Hut (Left, Outside. Right, Inside) - A large hut with a double chest with some random form of loot within it. Every tribal village will have one and one only.
 Shaman's Hut (Left, Outside. Right, Inside) - A more reinforced hut for any lifeforms that wish to preform necromancy. Has a small pit within it that contains an enchantment table. Tribal Villages have a rare chance of spawning with this structure within it (due to the pre-mentioned enchantment table).
 Common Hut - As the name may suggest, this hut is the most numerous structure in any tribal village. Depending on the size of the tribal village, there can be three to seven common huts in one.
 Pig Pen - Conclusive evidence that whatever live/s/ed in this tribal village is/was either carnivorous or very lonely. Tribal villages can spawn with one to two with each one, and this pens can have five to seven pigs spawn in it. There's also gates on these pens, which might seem odd seeing as whatever made this village hasn't/didn't understand the uses of doors.
 Fire Pit (Left, Normal and during day. Right, Lit Fire and during night) - There's always a fire pit in a tribal village, and it's also in the centre of the tribal village. But why? For warmth, religion, entertainment or all three? Either way, every night it's light on fire (probably ghosts).