Pig shrine

I think we should have a new structure rare in the overworld and nether because we are very lacking in both structures and raritys in minecraft.The pig shrine is a structure than can both spawn in the nether and the overworld plains.The shrine includes one chest like a dungeon and more important a pig spawner this structure is also as rare as a mooshroom island. It is made of of quartz and sandstone,also it looks like a shrine. That is my idea for a new structure in minecraft.