Except not really, the nice thing about the new talents is that for most of the part, the three talent choices are roughly equally viable, with some faring better in some fights over others. Instead of chosing +30% damage for thorns vs being able to cast the main nuke spell 20% faster, the choices this time around are significantly more balanced around each other. While the old talent system was essentially minefield with the mines already being revealed to anyone with the slightest bit of common sense, the new system allows for much more choice and variety between builds.
Some talents in hte new system are utter shit however, like Chi Torpedo (which is only good if you are having a really good day and people line up exactly how you want them too or if you are Roleplaying M. Bison).
I don't see what you are talking about. Of the choices you have, you have 1) Pick your role and 2) make a choice between 3 talents every so many levels. Now it may be more "balanced", I am not arguing that, in fact I would agree that streamlining would result an easier time of balancing between the classes and it is probably the main reason they did it, not for any real attempt to create a better system. Past that, there is no real choice, no experimentation as you are essentially the same regardless of your choice. Now I guess it also depends what version of the trees you are comparing. I think it was around Cata that they revamped the trees and it really limited development choice and selection (ie killed multi-tree builds) as prior to that you could really create some interesting builds by going down the various trees and maximizing various focuses. If you compare to that, well... this is a severely dumbed down system and while it may be more "balanced", the idea that people were all playing the same thing back then isn't a lacking of the system, but rather idiocy of the player base. As I said though, they followed the fad until someone else found a new combination to which the idiot crowd followed that. The difference is that now, there really isn't any point as every choice is basically the same. There are not distinct play styles and builds, just meaningless choices resulting in the same basic function and ability as every other person of that role focus. There really is no comparison to old WoW trees.
Though, I see the reason for not having complex trees anymore. There is no need for character development of any note as the content is all pretty much the same. You run in, you group DPS/HPS and rush off to your next targets. Gone are the days of clever uses of a number of varying skills, of CC, of interesting combinations of abilities. There isn't a need, the content itself is bland, pointless, and easily suited for simplistic button smashing. /shrug