Encased Mobs in the new Ice Caves Biome

We've seen the new Ice Caves biome and it looks awesome!  I always imagined something like this would be added back since the Caves and Cliffs update.  However, I think something cool could be added to the Ice Caves biome to give it that extra flair.  Encased mobs behind the sheets of ice.  Mobs like frozen zombies or the strays could be lurking behind layers of ice in the walls of the biome.  Perhaps if the walls were made out of the basic ice block, you could even see them from the other side?  

This would primarily add a bit of extra danger when mining, along with adding to the atmosphere of the biome being a bit more dangerous than most cave biomes.  On top of that, Ice encases things in real life, as we have found many mummies and artifacts encased in glaciers.  This would simply bring that into Minecraft!

Thoughts?