Anyone else notice the "Sneak" looks more like a warrior and the "Warrior" looks more like a sneak?
As others have mentioned, you need four to six squads to get a good game out of them. In casual 500 point games though, I just run ten squads with the warwitch and filler. Lots of fun and works pretty well.
They don't need rebased, but for the rest of the OCD people out there: If you are going to rebase these guys, you need to be very careful. It's very easy to lop off some toes leaving you with little left to glue to the base. Especially the one listed as warrior.