aries100
SasqWatch
Bashiok, the community manager on the official forums discusses release dates, PvP systems, total party size as well as if the designers are limiting character builds:
More information.There are no skill trees any more. Skills are still tiered by when you can buy them (essentially a level requirement) but there aren't any trees, it's one big pool.
Before this game even reaches a beta state there will be hundreds of people playing it internally, and most likely there will be builds that are developed during that time. But the game is specifically being designed in a way that skill progression is as much of a choice as possible. There will always be builds determined to be 'the best' as long as there are choices and options. Making every skill and every pathway perfectly equal would mean watering down skills, making bland options, and overall homogenizing the classes and skill abilities. So it's a trick of balancing unique and interesting and fun skills while also ensuring that no matter which ones you pick you're not totally gimped.