Quick question.. does the new Galaxy Editor still have a 'trigger' of sorts to load a map after the current map has been won or lost... or have they removed the functionality to make your own campaigns..?
That was the most fun I had doing with StarCraft 1 stuff, was making campaigns and such.

Yes, you can define the next map with triggers. It's in the category "game" > "Set next map". You need a string (filename).