Cilan is not DP Brock. He's still interesting, he has screen time, and he has proven himself an awesome character, IMO.
Plus there's no BS 1 episode making him into a doctor because the writers feel like it.
The only part of him that's being left in the dark is his development. I agree with that much.
"If Pikachu becomes a Raichu, I might be able to win that badge. On the other hand, to make it evolve just to fight...I would be just like Surge...Pikachu, what do you want to do? I really wanna beat that Surge, but I also don't want to force you to evolve if you'd be happier staying the way you are now." -- OS Ash, ESS
1. The Anime: OS > AG > BW > DP > XY (Tentative)
2. The English Dub: 4Kids + TAJ Productions (Seasons 1-5) > 4Kids Entertainment (Seasons 6-8) > DuArt Film and Video (Seasons 11-Current) > TAJ Productions (Seasons 9-10)
3. The Games: XY > BW > RSE > GSC > Y > HGSS > DP > RBG
4. The Manga: RSE > RBY > BW > DPPT > GSC
5. Pokemon: The Origin: Excellent: 94.7/100.
6. The Movies: OS > AG > DP = BW