A question was posed if there is an Imperial equivalent to the Fish Farm list. There isn't a direct equivalent because one important part of the Fish Farm (in my view), is the fact that the MC80H can fly at right angles to the ships threatening it. In other words, side arcs are nice for maintaining distance when you want to batter your opponent from arm's length. The Imperial whale clearly must be the ISD, but how to make it work?
ISD-II: Motti, ECM, HCIT, Brunson, XI7, Sensor Team
Gozanti: Repair Crews, Suppressor
Gozanti: Repair Crews
Gozanti: Jamming Field
Gozanti: Comms Net
Gozanti
Lambda x3, TIE Advanced x2, Jumpmaster
Advanced Gunnery, Fire Lanes, Sensor Net
387/400
Compare a bit with the Fish Farm list. The native hull of the ISD-II already gives you 11, identical to the effective hull of the MC80H with RBD. Then Motti soups it up to 14. So you're ahead here pretty significantly. But the Fish Farm MC80H has Advanced Projectors for damage mitigation. That could be ok on the ISD, but protecting your brace seems more important since you don't have quite as many native shields to use as the MC80H...ECM it is. In a squadron meta, EWS is probably better. It's a choice. Brunson is going to drop those damage spikes a bit. Throwing out your opponent's best die before you even use your defense tokens is going to save you damage. Just stay close to an obstacle. I thought about Hardened Bulkheads, but you're not trying to get in close and brawl. If MC30 swarm cages are a thing where you play, that's probably 5 points well spent in the Offensive slot.
Repair Crews on the Gozantis are to try to keep them alive as they cage in your opponent and maybe collect those tokens (depending on objective). This list keeps flotillas alive BETTER than the Fish Farm because they all start out with 4 hull instead of 3 with Motti.
I think the weakness of both lists is against large numbers of squadrons. If anything, this one is weaker. Not having Jan Ors to mitigate damage to the escorts will mean the TIE Advanced squads could run into trouble. But the Jumpmaster is still there to keep the Lambda's using their Strategic. Hopefully Jamming Field can help here, but it won't help you more than it helps the Fish Farm list.
The offensive power of the list is still there, but different. In the Fish Farm, we're looking at a native 4 red/2 blue side arc that you need to keep pointed at the bad guys. Add Ackbar and Defiance, and you're looking at 7 red/2 blue and no decent chance for a double arc short of doing a risky Ackbar Slash with your whale (probably not recommended). The Imperial version has a side arc of 2 red/3 blue. Anemic in comparison, but this ship has a monstrous front arc which you will want to use: 4 red/4 blue. The ISD would want to be able to double arc at range if it can, and you probably want to be flying obliquely anyway. If you are farming objective points, you don't want to be flying straight at your opponent's ships. Flying parallel-ish to the long edge of the table is probably the way to do it. I think this is going to be hard to do, though.
So, to sum up, compared to Fish Farm:
More Survivable (+)
Weaker Squad Game (-)
Harder to Bring its Better Firepower to Bear (-/+)