MGibster
Legend
The way I see it, a campaign comes in two basic forms. The first type of campaign is a series of scenarios whose only real connection is the PCs running through them. This is basically how I grew up playing AD&D. Some modules were connected, like The Secret of Bone Hill and Assassins Knot, but for the most part we'd just bounce around from scenario to scenario. The second type of campaign is pretty much the self-contained story like you find in Curse of Strahd.You sound more organised than me, I'll often start a campaign with little to no idea as to where it will lead. The last one I ran (quite some time ago now) had events that would unfold that players could get into or ignore as they wished. First few adventures led into something that was more of a story arc with the big bad being some throwaway character that was there, in the background, then suddenly he ended up with a grand scheme to thwart.
Both have their advantages and disadvantages, but I favor the self-contained story campaign because I find it's easier to complete in a satisfactory manner.