A few minutes ago i finished the Protoss Campaign in Original mode and i wanted to announce that the rest of the missions (the missions following "Into the Darkness" & "Homeland") are "playable" (meaning you won't loose from the start) !
I will start playing the campaing in Expansion mode (to check if the missions are playable and ofcourse to complete the game:D ) and i'll post informations if there are any UNplayable missions ASAP !
Take Care !