Considering I can't animate him and change him from the one expression he's capable of (ie give him some quirkiness a la Link) .. yep. Voice acting would add to him. That's all I can think of really. You're really kind of twisting what I'm saying to be some damning thing, or that I'm just not imaginative enough or something. The playable character is sloppy in comparison to the rest of the game.
And lifeless isn't the only issue. I already told you why I thought he needed voice acting. I talked about the dialogue of the rest of the game and things of that nature.
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Digi ... Check out http://outoftreble.com/