I find that I am constantly extending the pauses between sentences to get my AI narrator to slow down. A feature to set a custom default timing would be nice (for example, setting the pause after a period to a .5 sec by default). It would be above and beyond to give a variance option, such as, setting the pause after a period to a range of .5 to 1 sec. Then allowing it to randomly assign a pause length in that range to each sentence. This would break up the speed and monotony to better reflect the pauses that might occur in natural speaking.