The Dag'Kar in quantities only gets cheesy when the fight gets to be War-level or higher. If you roll random priority, the Dag'Kar, in my experience, is just a good Raid ship, with its own flaws and issues. The Ka'Bin'Tak doesn't seem to be cheesy at all.
The Narn fleet is particularly susceptible to channeling to certain ships because it has so many loser hulls out there. In a previous entry I listed ships that have balance issues as being too weak or too strong. ONE Narn ship was too strong (the G'Vrahn is cheesy-broken at any priority). However, I think that no less than 8 ships are in dire need of an upgrade to address balance issues: G'Quan, G'Tal, G'Quonth, Rongoth, G'Sten, Rothan, T'Rann, T'Loth. That's a ton!
If you're worried about Dag'Kar cheese, there are some other options out there for you....
-- Skirmish is awash in good solid choices. I like, in no particular order, the Thenus, Ka'Toc, T'Rakk, and Sho'Kar.
-- There is one Raid choice that I love: the Var'Nic. Lovely hull. It's the Narn Hyperion (and there's nothing wrong with that.).
If your opponent is fielding large numbers of Demos against you, forget worrying about cheese and field whatever you like. That ship is broken beyond words.
Good hunting, and, the only good Demos is a dead Demos; I prefer to use Ballpeen Hammers.