It would be great if there were an add-on or additional downloadable sets of emoticons to expand the set of emoticons that currently exist. I know I am not the only person who wishes there were emoticons that are more useful. Why is there no "Thumbs Up" but there is an image of a sheep? I don't think a sheep has ever come up in any Lync conversation I've had.
I'm sure the community would be able to provide additional suggestions on potential emoticons. An add-on or various sets of downloadable expansions could be ideal so only individuals who wish to expand their available emoticons would seek out the download.