When looking through the armours added more recently to Unslaad I found that the Hoarfrost knight armour is very oddly scaled.
It works well enough on the desiccated guards wearing it ( given their labeled as plague knights in the Creation Kit their not exactly supposed to be healthy)
But when the player character (or any other npc it is given to) equips it compressed the torso to the point that their doesn't look to be enough room for them to have internal organs.

This mod fixes that (while leaving the guard enemies un altered so they remain as intended ) But changes the armor so a human being (or elf argonian or khajiit for that matter) can fit into it properly.

While doing this I also set it up to have proper armour scaling (changes size with the characters weight), and adjusted the size of the helmets so a head could actually fit in side of them.