What non-Star Destroyer type ship in the EU do you like. Whether its by aesthetics or role. They might not be the most effective ship in their class, but they could be just something you like.
I'll start the list.
Strike Class Cruisers. The idea of a cheapish (by Imperial standards) ship seems sensible. Somehow the look of these ships seems pretty decent.
Skipray Blastboats. I'd like to have some more ships that were in the class between capship and fighter.
Carrack class Cruisers. Not exactly fancy, but functional.
Interdictor Class Cruisers. Okay, these look a bit like an ISD that's been left in the washing too long, but the idea behind a gravity well projector on a small cruiser hull seems sensible.
I'm not too sure about the Lancer class Frigate, the shape seems a bit...odd.

Corellian Gunship.