>>725177721
>The exterior doors are literally un-interactable until you have entered combat,
I'm not sure which doors you're talking about. Some areas have enemies that break your Obfuscate though some poster recently had a good point about taking both Obfuscate and Stealth so you always had an option.
I played Nos recently and you can't just stealth through everything but Obfuscate still works for a large portion of the game after the sewers. Chinatown only has human enemies so Obfuscate works the entire time you're there, Giovanni mansion has dialogue and stealth options, the Sabbat level is harder to stealth through but the Society of Leopold/Ming's temple/LaCroix's tower can all be stealthed for the most part. Yeah there's no dialogue options for them but it wouldn't really make sense for there to be any, and earlier missions didn't always have dialogue options either.
It's alright for some sections to force combat, the game told you that would happen from the very beginning.