Governing the achieved balance in Starcraft and popularity of the current installment of Diablo, I find it hard to see how Blizzard can provide any new ground-breaking differences for the series. Is taking Diablo closer to WoW really a good way to go? Why not start a new series, or at least get the official praise of Games Workshop this time around if Blizzard wants to make a second installment of Starcraft, so the races won't look as heavily influenced by Warhammer 40,000?
"Stephen Wolfram is the creator of Mathematica and is widely regarded as the most important innovator in scientific and technical computing today." - Stephen Wolfram