I never used the OA stealthsuit when i was playing fallout 3, because it trivialized most of the content.
"I am going to stealth-melee all those raiders with my jingwei shocksword, one after another without them retaliating."
But since this is a single player game, and people can always decide not to use it (or loot it) i wouldnt really mind if the old version was restored.