It's fun. I wish they kept the cauldron & cube though, but the free town portals make trips back to vendor not so bad. The crafting system feels like a huge gold sink but I like it so far. The ability to enter a friends game at any time and teleport to them from their banner makes it incredibly easy to come in and play even for just 15 minutes and then leave.
I like the itemization, it feels like my item decisions really impact my character, upgrading weapons and adding dex gear (as I am playing a demon hunter, which gets damage from dex) shows a very noticeable increase in damage. The variety in skills is keeping the game fresh, every few levels I have something new to play with, although I often find myself going back to an older ability I prefer.