I really loved this post. Thanks a lot for this. I agree to everything you said.
The reason why Peter Parker has been my favourite character is precisely because of what you're saying. Peter was always trying to balance everything and live a normal life. That's what made him a hero. Not his powers, nor his intellect. Spider-Man is the hero that everyone can be.
Frankly I have no use for a Spider-Man managing a company or being a successful scientist, not because it can't be a good story, but because it moves the character too far from his roots and makes Peter just one of the others heroes, without paying attention to the reason why it became so successful as a character. And seriously, the new ASM idea is the classic status-quo of Iron Man. I never find that idea interesting (and for Iron Man it made sense) and I don't see why I should be interested now.
I think that Slott is too big a fan to write the character good. All his ideas basically revolve around making Peter look cool and a winner, when that's exactly the opposite of why he is great.