About butchering and alienating fans of D3, look at this its most important to understand what was going on:http://en.wikipedia.org/wiki/Blizzard_North
"By June 2003 two new games were in production. However, on June 30, 2003, several key employees left Blizzard North to form the new companies Flagship Studios (8 moved here including Max Schaefer, Erich Schaefer, David Brevik and Bill Roper) and Castaway Entertainment (9 moved here). The Blizzard North exodus continued on with around 30 employees leaving the company in total."
So the Beta of D3 released about 2005 was so weak in vivendi's eyes that they scrap it and make a complete new diablo3 but without its original core designers, so there is hardly a surprise its very different in comparission to d1+d2 and i do not mean the technical differences.