Just a note: When people talk about Kanto being "Watered down" in HGSS/GSC they're referring to the story. There isn't a lick of narrative or purpose once you get to Kanto in those games. You just fight the gym leaders then the E4. You can do it in one sitting in like, an hour, its simple and quick and only like half a notch above boring.
Well, that and pretty much everything interesting in Kanto other than the gyms was conveniently shut down or blocked off somehow. --- I bet you were thinking how hot it would be to see Tsunade with her gates wide open, inviting you... ~DuneMan