I know it might sound a bit silly, but the straightforward linear plot of StarCraft and StarCraft:BW was much more enjoyable than the multitude of characters, millenia-spanning history of Warcraft 2/3, that was integrated into the massive plot.
There is a reason why Kerrigan was voted #2 best Game villain of all time, and Tassadar's suicide as the best game ending.
By focusing on what is important and clear, and removing the not-so-important details from the game plot, Blizzard created something nearly perfect in terms of game plot.

I hope they don't go all Warcraft on our asses, just to c cash in on the background when World of StarCraft is launched. (400$ says it's launced within 10 years)

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Admiral Anderson Mccutcheon
Inspector General
TerranoZergus Project