Kuzehiko
That moment I found a lifetime treasure
The difference with May was that her voice actress was suffering from some kind of condition that precluded her from doing voice work and I have heard that Japanese programs are loathe to replace voice actors/actresses even if there is a good reason to do so, such as a medical condition. From what I can tell, Dawn does not have that problem so in my mind, she would have a higher chance of returning again than May would.
Good point.
I can see her coming back even when there're big chances we get Sinnoh remakes.