The announcement from Dawn City couldn't have come at a more opportune time. However, it didn't completely dispel everyone's doubts because the promises made by Dawn City seemed rather vague.
They didn't provide an absolute guarantee that the leaders could retain their power, it was only stated as "as much as possible." This implied that there might be uncontrollable factors at play.
And what was that uncontrollable factor? It was Waldo!
Waldo had the power to instantly revoke their authority. While they held great respect for Waldo, no one wanted this scenario to unfold.
"The announcement from Dawn City isn't sufficient. We want a guarantee from Lord Waldo! I only trust Lord Waldo in this matter, I don't trust anyone else. I'm also afraid of losing everything once I get to Dawn City. That's why I hope Lord Waldo can step forward and provide us with assurance!"