I like the idea of a Crusade and am interested in joining. Work can sometimes be hectic, and I can get called out of town quickly which are the only downsides for me participating. I'm interested in a fluffier campaign. More focus on telling good/cool stories. Maybe incorporate some type of character/unit growth to see the growth of the army overtime? Not saying it has to be roleplaying necessarily, but more background info that provides context for why the different factions are fighting each other.
I like the idea of using the Tempest of War pack for setting up missions. I would also prefer points limit to stick a little lower, around 1500 max. It would make it easier for me to add more units as time goes on and keep up with the crusade. But I also play Custodes and Grey Knights, so that may not be as much of an issue if I can carve out some time for painting.