Ok I am currently working on the interiors for the imperial structures. Anyway, before i started doing the modeling for the meshes i thought i would do a quick design diagram to show you all the direction i want to take the visual style of the imperial interiors. 
As you can see above I am not going for anything too radically different from what the original meshes are. However I will be trying to make them look a bit more run down and old. They always seem to clean for my liking in morrowind so that is the primary change that I am making. I will also be changing out the square pillars of the original for circular as i think they look better.
Any feedback would be great! And hopefully I will have some WIP images sometime next week.
Cheers,
Leaf4d

Reminds me of forts in
Reminds me of forts in Oblivion, which is good since they are imperial.
Make sure that your model sizes (or is it called pivot?) match the existing ones perfectly.