When I think of entry-level, I think of the A4, C class, 3 series, CTS, IS, G, 9-3 and the upcoming Zephyr.
For the intermediate level, I think of the A6, E class, 5 series, STS, GS, M, 9-5 and the LS.
Caddy needs the ULS in order to compete with the high-end cars from the various manufacturers. I think the next-gen CTS should be a little bit smaller and use space more efficiently.
Edit: BTW, the local dealer conglomerate (Peruzzi) is opening a new Caddy dealership within the next year or so. I can't wait.