Like, if Jarvis was there all along, and he's a smart guy, why didn't he figure out Obadiah?
Who's to say he didn't? Honestly I think you're overlooking something pretty crucial here. Jarvis, for all that he is part of the family etc is an employee. And while Tony has a tendency to blur that line, Jarvis has shown (in 616 canon) that he will uphold that. So why didn't he do anything about Obadiah? Because it was NOT HIS PLACE to do so.
Even as fic fodder... I don't know. I'm a fan of the K.I.S.S. method. But whatever gets you off.
Re: other household
Who's to say he didn't? Honestly I think you're overlooking something pretty crucial here. Jarvis, for all that he is part of the family etc is an employee. And while Tony has a tendency to blur that line, Jarvis has shown (in 616 canon) that he will uphold that. So why didn't he do anything about Obadiah? Because it was NOT HIS PLACE to do so.
Even as fic fodder... I don't know. I'm a fan of the K.I.S.S. method. But whatever gets you off.