I'd love for more prosthetic armor pieces soooooo bad in d2 which would be great for the sci-fi setting and give additional story to player characters,The only armor set I'm aware of that does in d2 is the hunter set from the season of undying called phenotype plasticity ,Which I think is a shame since its a really cool aesthetic,Another example being the Vog age of triumph set from d1, I'd love for each class having a prosthetic option! You did it in halo reach and d1! Why not more in d2! Don't be shy in adding more cool stuff like this!