Don't forget about Brock's appearance in Sun & Moon.
As far as Misty is concerned, I used to be her number one fanboy and at first, I couldn't see Pokemon anime without her. I was eagerly looking forward to her brief return in autumn 2003. The same day that the episode came out in Japan, the majority of our class was taking the matriculation examination, but I was in our school computer class, translating the episode preview from Japanese to English.