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[...]I think it is reasonable to look at why people are regularly passing up spots +CEV spots and with all the information available why no one on the STTF has ever really looked into this.
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We are some who have looked into this in great extend. I am currently investigating my early play in order to find more +CEV spots.
I got inspired by the two following articles) on a competing site no less!):
An alternative take on early play
Alternative take part II
The gist of it is that you might pass up some $EV by not taking it from the fish by challenging post flop with marginal typical -$EV hands.
By that reasoning I have now begun looking at marginal hands (small pairs, suited connectors, obvious steal spots with garbage) in the early stages of the tournament.