I just built a fleet which is trying to use Kallus on an ISD2 instead of escort fighters for my rhymerball, and while working through my shenanigans realized there's some potential for him with the new upcoming Arquitens light cruisers. They have an evade and a turbolaser stock, allowing Kallus to add a red die against unique squadrons and the ship to exhaust its evade to set it to 2 damage. So you're doing minimum 1 damage to squadrons.

But here's where it gets fun.

My ISD2 is built as the Avenger, with Quad Laser Turrets and Leading Shots. That means with Kallus it get a counter 1 + 1 die of my choice, and it can give up the 1 blue from Counter to reroll the other die if they both blank. In a normal anti-squadron salvo it throws 2 blues with a reroll on one against normal squads, and 2 blues and an extra with a reroll on a blue/extra against unique squadrons. And, none of them can use defense tokens if they're exhausted thanks to Avenger.

The Arquitiens might have even more shenanigans, depending on its upgrade slots and cards.

Here's the whole fleet, which is pretty annoying altogether:

Konstantine's Christmas Trees (398)

Looks like fun to play. Interestingly, I'd be most worried about other bomber lists. With no way to tie them down other than Dengar and no defenses for your keystone squadrons (Rhymer and Dengar), your bombers are going to get picked apart by the scantest of fighter screens. Rhymerballs especially are going to hurt because your Quads are going to do nothing for you (distance 1 limitation).

I feel like your ISD is going to be doing ask the heavy lifting here. Which isn't necessarily a bad thing, since it'll do a good job of it. Problem is Avenger really wants something else to tee it up, to force those tokens to exhaust. Once your bombers are tied up, you really don't have a second threat to set it up.

Same thing with squadrons: without a really credible second threat to squadrons, Avenger doesn't do much for you. You'll catch the odd scatter with it, but that's about it.

I do love the idea of trying to find a way to support bombers with ships directly though, rather than having to rely on escort squadrons. Try it out, see what worked and what didn't, iterate on the idea and make it better!