Can't be mad at the AI for doing the right thing - if you have numerical superiority then one for one trades are great (and also it does it quite spectacularly on occasion). Fearless AI would also go great on Luddic Path ships, probably especially Venture (LP) and Colossus MkII.
Actually I think it would be great for some "themed" fights. For example, right now the focus is on [REDACTED] simply because there really aren't other fights that are "endgame"-worthy, i.e. most of the battles are simply not challenging enough; faction fleets aren't really that hard. The differences between factions also aren't really showcased. Also, it seems strange that any random fleet can go to a planet and saturation bomb the place, killing upwards of tens of millions of people. You'd think the people would do more to prevent it.
What if, when you try to saturation bomb a planet, you have to fight a defense fleet of some sort, that represents the population's last-ditch effort to prevent itself from getting eradicated? It would be larger than usual, showcasing the particular faction's fleet style, and also, the fleet would have Reckless/Fearless AI -- since they're basically trying desperately to prevent you from eradicating their world, it makes sense that they'd fight to the death. Then there would be a reason to "care" about how the different factions' fleet styles are. Maybe trying to saturation bomb Chicomoztoc would be the equivalent of roughly a double Ordos in difficulty, but with Hegemony fleet composition and Reckless/Fearless AI, since you're basically talking about a population of hundreds of millions pooling together their resources to prevent themselves from being eradicated.
The Luddic Path might make sense for Reckless/Fearless AI, since it's also somewhat of a desperation thing that they got going on.