I've got a plugin that lets you manipulate the camera differently than scenes really allow. Rick wilsons also has a few camera tools. So there are ways to improve over just scenes, which is why I was asking if that was of interest here. But its looks like probably not the genre you are looking for.
Martin Reinhart was working on a plugin of some sort to help with moving objevts, though I never quite got into it.
Jim had a version of Mover at one point [EDIT: I see Jims is actually listed above arleady, great!)
Dynamic components are also a ruby script, and they allow some animation.
And Chris Glasier has also been working feverishly on a machine that plugs into SU and can help animate objects, though its scope is amazingly larger than just that. But you have to conatct him directly about it I think. I don't know if he's posted the source to it yet?
Sorry, not terribly helpful without direct links. But I just don't have the time to track them down right now.
Chris