We actually currently do have 15 "well chosen" smilies which would seem to cover the gamut of acceptable expressions for those who cannot actually put their thoughts into words. I'm really quite confused as to what other terms of community that could not be currently gleemed from this list:
Thumbs up; Smilie; Confused; EK!; Mad; Roll Eyes (Sarcastic); Cool; Stick Out Tongue; Wink; Great idea; Big Grin; Star; Embarrassment; Thumbs down; Frown.

What we see so far, is not a single example that has been posted as to what else is really needed and a clear explanation of why that need is not being met with these 15 "well chosen" emoticons. If we're just saying that more is always better, then excuse me as i need to go hire 8,127 additional moderators because our needs are not being met by those volunteers we have. With that statement, I'm assuming that you'll just take me for my word?