Rookies never got the development they deserved..
What development ?
How could he develop characters like Ino, Shino, Choji, TenTen and Kiba? They were never meant to be an important part of the story and neither did they have any thing to be 'developed' from. They had normal childhoods and they simply grew up in a normal way becoming stronger Shinobis. What more can you expect?
Shikamaru has gotten very good development. I don't think anyone can disagree.
Rock-Lee- He is a character that is not supposed to change ever. That's the defining trait of Lee and even Gai. The only development that should be expected in Lee's case is in his strength and not his personality. Kishi has delivered on that.
Hinata- I'm sorry, you cannot deny that she has got decent development. She went from a weak, shy girl always looking up to Naruto for inspiration to a strong, confident ninja who managed to inspire Naruto after Neji died. Not only that, at one point she was even shown to be leading the Alliance vocally and by example. Yes, this change felt sudden and forced but she did get the development.
You know, SP have done a lot of episodes focusing on the rookies. Its funny that many complain that those episodes were boring and pointless and yet also expressing disappointment that Kishi did not do something similar.