I like this idea! But this should be very good voice recognising system or we've got many dead poor Mudokons and wasted nerves
Remember me and my friend taught puppies in Nintendogs, it was fun but hard because game memorized the command with intonation that was first sayed. Change it and dog won't understand you. So they should rework problems like this and made alternative old style scheme for thous who don't have mic.
But how will temple puzzles (if any appear) work? Will we have to sing?
I want to see game wich really understands what you're talking about and responds, creating illusion of you have a dialog with character, for very very long time. Last time I thought about it was when I played again in advanced life simulator called Creatures (windows 98, it still works!). Appearance very similar to Oddworld, by the way.