A few ideas of how to save D3

[Elric of Grans]

I would say the spikiness exists in other difficulties too. I have almost finished Nightmare, and did most of it while only half paying attention (talking to people, eating, etc). There were just a couple of times, however, where it suddenly went insane for 10-15 minutes, then back to auto-pilot. I anticipate this will become more pronounced in Hell, and even more so in Inferno. There is a fundamental issue that needs tweaking, which should resolve this across all difficulties (assuming Blizzard works it out properly, rather than ham-fisting it in Inferno).