I figured that since I was already thinking about powered armor, I might as well go ahead and design the gold-standard of powered armor, the Mobile Infantryman's suit from Starship Troopers.
This isn't to say that I've never tried to design this suit before. Oh no, I've tried plenty of times. The problem is that the MI Armor is has a lot of shit tacked on. Going by the first chapter, we see four atomic rockets, grenades, fire-pills, a beam-knife, a Y-rack that automatically launches ordinance every time the suit lands from a jump, and multiple different-sized flame throwers. Weapons are "unslung", there's a specific line later about how letting go of your rocket launcher causes it to "snap back into place'', and I haven't even mentioned the jump jets yet!
The only description in the text about the suit's appearance is "looks like a steel gorilla," and later a line saying that the helmet in particular looks like a "hydrocephalic gorilla". Using all of that and ample reference of modern military forces, I've got this:
I been focusing on the basic design of the suit so far, but I'm going to have to figure out where other weapons attach and how. Also, I'm going to do a shot from behind, to show off the jump jets and weapon attachments.