I would love to see something like a leader in the colony.
When you choose somebody to be a leader, he gets an extra job, which basically lets him boost morale(mood) and/or lowers the mental break threshold of the pawns by "inspiring" them.
Also it may be cool to add a "guard leader" job.
There are probably way more things that can be added to the colony leader job.
Wondering what your opinions are about it (: