I'm currently creating a big campaign based on The Gathering Storm, The Edge of Night and Horror at Hugeldal. Right now a rough estimate is about 15 sessions of 10 hours each, so it's enough for quite some time. I have the major extra scenarios in place, but still need to rewrite some of them a bit to fit perfectly.
I do however struggle a bit with deciding on the bigger plot. I'll be making some extra hand outs and scenarios to tie it all together to create the persistent plot throughout the campaign.
I'm looking at Dr. Festus as a possible player in all of this, pulling all the strings. The lightning stone from TGS is also something that can tie it all together. The noble families of Übersreich must play a part as well of course.
Has anyone else created a bigger campaign with a persistent plot throughout based on those 3rd ed. scenarios?
Any input is appreciated.