I think they do. They are all meh except for Rush, Det and I suppose Samurai (which isn't amazing anyhow). I still think they should replace Detonator for a bigger drop tower with a larger capacity and restraints which don't get stuck closed. It's a good ride, but it doesn't attract that much attention, which I guess is a good thing for visitors but bad for the park as it makes a good queue cutter for the bigger attractions.
Thing is, what would they get? Top-spins are old, although a double sided floorless model could slip in nicely. Can't thing of many flats with small footprints which would fit into Thorpe.