I don't see how he's a crutch, and you don't always have to take him. He just works very well with Doug, being able to get objectives while Doug goes on a killing spree and the rest of your crew helps with that, or helps Von Schill complete objectives. If you don't like it thematically I guess that's your business, but it works. I don't like him with any of our other masters, but with Doug's playstyle it syncs up a good amount of the time.
The Grave Spirit is good depending on the rest of your crew. I personally like using both the Dead Rider and Von Schill in the same list as Doug as it has a ton on mobility. If the Rider has the GS on him, so much the better. It just depends.
Then get some Drowned to lock up models, then maybe a belle or two and you're set.