[jeffnc]

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Not to be a nit, but remember that the EV of any hand increases when there are more people in the pot, simply because there is more money in the pot (obviously assuming hero voluntarily puts in the same amount).

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That's clearly not true, in the general case. There are many hands (or should I say scenarios or situations) where your EV is higher with fewer people in the hand. Two obvious counterexamples are
1) big pocket pairs in NL (not necessarily limit) where the majority of play will be post flop with deep stacks, and
2)utter trash, where your only hope of making money is based on your ability to win the pot with a bluff.