So, in M2E I've been mostly playing Outcasts. Right now I have every Outcast master except Misaki and I cycle through playing all of them.
I wasn't planning to play Ressers much, but I sure seem to be buying a lot of Resser models!
For Levi: Lots of undead, but especially Belles for manipulation, Necropunks for objective grabbing, and the Dead Rider. Also the Transmortis set, but that was because I like the models and the idea of a scenario pack so much.
For Jack Daw: Nurses, the Drowned, the Hanged, Jaakuna Ubume. So much synergy!
For Hamelin: Crooligans for objective grabbing.
For Tara: Just about everything when dual factioned, but mostly I'm using the other Resser models I got for the other Crews.
It seems like my choice of playing Outcasts means I'm buying and painting a lot of Ressers!
This isn't a complaint, just something I've noticed -- the Outcasts seem to have a lot of Crew overlap with Ressers. Outcasts in general have a lot of odd Crew selection rules, but they almost always seem to involve adding more Resser models.