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I'm thinking of erasing all the printing of my minifigure heads. I just don't think they should have specific expressions if the whole point of playing is putting them through different situations. Why should this dude be smiling when I'm making him hang of a cliff or fight a bear? And no I'm not gonna be swapping their head for a different expression just to play out a 60 second scenario.
Even the classic smiley doesn't feel neutral enough. This way I can just use my imagination to make it exactly what I want it to be, it gives Lego an inherently less cartoony feel and it's one less thing to worry about as far as having to spending money on character customization to get the right features I want