I might go so far as to add that the original intent of the talent system was to give players a way to customize their character and playstyle. Players don't currently have any real way to do that at endgame.

The new system addresses this issue by giving you choices that have a meaningful impact on your playstyle. It still needs balancing ( obviously ) but I think players will be much, much happier with the final, polished new talent system than they are with the current one. The advantages of the new system far outweigh the ( frankly groundless ) complaints that cookie-cutters will be more abundant than ever.

But think about it this way: When every boss has its own unique cookie-cutter build, can any build truly be called cookie-cutter anymore? Currently, everyone has a single talent build will work pretty much anywhere. Sure, you might have one for PvE and one for PvP, but do you ever, EVER have to swap a few points in a spec between boss fights or battlegrounds?

If suddenly you find yourself swapping all different tiers of talents for various different boss mechanics and battleground objectives, the problem of the cookie-cutter build will be solved.