Although still very enjoyable, certainly the Reichenbach falls had an effect on Holmes and Watson, since these stories don't share the claustrophobic Victorian wonder of the previous tales.
An interesting thing to these stories is that they play with the format a lot more, as these sorts of 'returns' tend to. Previous tales are very careful not to tamper too much with the formula, whereas for a lot of these stories, the formula is thrown out of the window. Holmes, in the final tale, for example, takes part in a case (which is immensely dissatisfying, might I add) which staves off European war. Often the stories just stray that wrong side of the line of ridiculousness that Conan Doyle was so fond of skirting. One might even argue that its his distaste with having to resurrect his detective that makes him so potentially destructive to his legacy (and why he leaves him in the countryside keeping bees).
Still, there is certainly still magic in this collection and it's definitely worth some time if you haven't read these, often lesser known stories, before.