For some Imperial fun I came up with an Interdictor list:

Gravity Well (399/400)
Empire - Author: Qualitypunk

Commander: Admiral Piett

Objectives: Advanced Gunnery, Contested Outpost, Solar Corona

[flagship] Star Dreadnought Command Prototype (220)
- Admiral Piett (22)
- Ravager (4)
- SW-7 Ion Batteries (5)
- Phylon Q7 Tractor Beams (6)
- Damage Control Officer (5)
- Emperor Palpatine (3)
- XI7 Turbolasers (6)
= 271 total points

Interdictor Suppression Refit (90)
- Interdictor (3)
- G-8 Experimental Projector (8)
- Grav Shift Reroute (2)
= 103 total points

Gozanti-class Cruisers (23)
- Comms Net (2)
= 25 total points

Suggestions to tweek this are welcome