Sort of. I really miss the comparatively simple world where I knew everything and whatnot. (This is mainly coming from playing Red, I only rented Gold and never owned it, though I would LOVE a remake of it.) However, this could be nostalgia speaking, since I played Red so many times that I could do anything there.
I have two main gripes about the newer games: how the game has slowed down, and how the creativity in the Pokemon has been dilluted. Especially in the most recent DS games, the newer graphics make it take a little bit longer to open the door (you have to watch it slide open), and bringing up the menu seems to have a slight lag which is frustrating to have. It doesn't help that getting really good Pokemon in game by EV training is already tedious.
The second is a problem I think most people will agree with. It just feels like there are so many pokemon that just don't seem very much "like" Pokemon. I'm too tired to provide adequate reasoning behind this, but a lot of the newer ones just don't seem to mesh with the old 150/250. (Nosepass? The Regi's even?)
One other slight annoyance is the number of legendaries now. To cartch all the pokemon there are way too many legendaries: the birds, the dogs, the azelfs, the regis, the latis, kyroge and groudon, the other birds from gold and silver.. tons. That's 18 just off the top of my head. 18. Throw in Mew and Mewtwo and that's 20. Really? Legendaries should be way more sparse than this, IMO..
But they have their merits. The battle system has gotten more sophisticated, but in a good way. Having special/physical attacks for every eleemnt was a much needed overhaul, and I think it's generally been pretty good.