Azalea Structure

I've been thinking a lot about what I want in the new update (Caves and Cliffs) and I thought of a structure found on a surface cave and this surface cave goes down deep and you can actually find loot there like diamonds , gold , iron and other valuable stuff but in a balanced capacity.

It will have mobs inside mostly zombies and skeletons which will have some paper on their head symbolising that they are ancient (I got this idea from the egypt pharaohs) 

I Imagine it being a structure in an open big cave with rails down and azalea and jungle wood around it 

The structure will be rare to find like a little rarer than a brown panda.

I would really love this future in the game as I love Minecraft and I think that it's a good feature , thank you for reading my idea :).