This could only be better if you could actually make it change into the suitcase.
Curse you laws of physics!
You could just make a suitcase prop, and have it open.
Oh, and btw, there are a couple more suits you could (you don't have to, but you can if you want) make:
Stealth/"Hypervelocity" Armor and Deep Sea Armor:
Or maybe Hulkbuster or Thorbuster?
Anyway, your doing an epic job as usual, keep up the kickass work.