Rondel Mechanic Change

I have been toying around with just such an idea recently. but one aspect of the player board "worker" placement might be in the form of a Rondel. The player might for that section have a single worker that can move only one space. The player would gain the action the worker was on and one action from a space that touches that space. But in the worker placement sense that worker is trapped on the rondel.