I think realistically at least some of the witnesses are going to want to give it some time to see if 10% generates high demand.

At a glance I'm seeing a range of 5% to 12%. Is it possible to receive a different rate than the stated 10% dependent on which block producer did the thing with the stuff and the transactions at the time?

It's based on the median so the median would have to shift (why it rarely changes).

nods confidently