In (sort of) the spirit of the original post's question, does anyone mind posting their fleet comp vs Ordo's? I usually start encountering Radiants before I have a colony printing whatever ships I want, so I'm at the mercy of whatever I can find. I recently had a Conquest, Onslaught, and a few various cruisers get demolished by a Radiant and a bunch of brilliants. The only ship I've found that reliably holds the line vs Ordo's is the Paragon. I guess I could tailor specifically with solar shielding, etc..
What type of fleet are you looking for? What's your playstyle? Focused on piloting your flagship, top level order Admiral? Mixture? Do you like the idea of a line of tough slow ships or more of a fast wolfpack?
I will note, you'll want to be hitting the 240 DP deployment limit when taking on a full Ordo. Also, a way to grab defense points quickly to get your deployment limit up to 240.
Here are a couple campaigns save files I have (ignoring unique campaign ship configurations) and the fleet configurations as they are saved (so I may have been doing a bit of experimenting, but nothing too crazy).
Campaign 1: "If you can't beat 'em, join 'em"
Character: Combat Endurance, Impact Mitigation, Field Modulation, Target Analysis, System Expertise
Wolfpack Tactics, Crew Training, Navigation, Gunnery Implants, Energy Weapon Mastery, Electronic Warfare, Flux Regulation, Cybernetic Augmentation, Neural Link Automated Ships
Combat Ships: Radiant (Quad Autopulse, Plasma, Quad Typhon, 2x Ion cannon, 2x Burst PD) acquired from from Red planet quest, 2 Odysseys (Plasma, HIL, Hurricane, Sabots, assorted small guns), 6 Hyperions (SO, Heavy Blaster, Ion Pulser, Heavy Machine Gun)
Logistics Train: Atlas, Prometheus, 2 Revenants
Relies on transfering from one of the Hyperions to the Radiant at the beginning of the fight, and relying on superior human sense of positioning and timing (when to fire off a quad reaper salvo). There's no real "holding the line" with this composition but more of an amorphous set of distractions which the Remnants can't quite pin down while the Radiant comes in and just annihilates one ship at a time. Probably the strongest go in and just smash non-unique ship setup I've been using recently.
Campaign 2: "Old School or New School? Why not both?" or "Is Neural Link any good without a Radiant?"
Character: Combat Endurance, Impact Mitigation, Field Modulation, Target Analysis, Missile Specialization
Wolfpack Tactics, Crew Training, Navigation, Gunnery Implants, Flux Regulation, Phase Coil Tuning, Neural Link, Field Repairs, Ordinance Expertise, Polarized Armor
Combat Ships: Onslaught XIV (start in this one), Afflictor (neural linked), Onslaught XIV, 2x Legion XIV, 2x Medusa, 2x Hyperion, 2x Scarab
Logistics train: Atlas, Prometheus, Revenant, Phaeton, 3x Shepherd
This was an attempt to figure out how good Neural link was, and I was focusing on jumping between the Afflictor and the Onslaught. Used a low tech capital core, combined with high speed and reasonably killing high tech frigates/destroyers. It was cute, but I'm not sure it was that much better than just sitting in the Afflictor 100% of the time. Afflictor in player hands with a fleet to distract is quite strong.
Campaign 3: "I like piloting an Odyssey"
Character: Combat Endurance, Impact Mitigation, Field Modulation, Target Analysis, Systems Expertise
Coordinated Manuevers, Crew Training, Carrier Group, Officer Training, Best of the Best, Navigation, Gunnery Implants, Flux Regulation, Field Repairs, Polarized Armor
Combat ships: Odyssey (with designated officer with Combat Endurance and Missile Specialization - I swap in combat to benefit from the extra missiles), 2x Onslaught XIV, 1x Legion XIV, 4x Enforcer XIV, Scarab, 5x Omen
Logistics train: Atlas, Prometheus, Phaeton
Not as strong as it used to be. I'll sometimes deploy just the Odyssey, sweep a bunch of frigates and destroyers against an Ordo, then deploy the rest of the fleet to focus on the remaining cruisers and capitals (or retreat and redeploy). To be honest, the line holders are too slow to pair with the Odyssey play style, and likely would be better with a more high tech wolfpack tactics line up with the Odyssey (similar to the first campaign except without the Radiant, but using this skill setup).
Campaign 4: "Losses? What losses?"
Character: Impact Mitigation, Field Modulation, Target Analysis, Ballistic Mastery, Missile Specialization
Tactical Drills, Crew Training, Carrier Group, Officer Training, Best of the Best, Field Repairs, Ordinance Expertise, Polarized Armor, Containment Procedures, Hull Restoration
Combat ships: 2x Onslaught XIV, 2x Legion XIV, Eagle, Fury, Afflictor, 2x Scarab, 2x Omen.
Logisitics train: Atlas, Prometheus, Colossus, 3x Ox Tugs (with 1 s-mod each)
All officers take Ordinance Expertise instead of Combat Endurance, since Best of the Best + Hull Restoration + Crew Training is already +30% CR. You don't sweat ships getting blown up since you have Hull restoration. This one is also a bit on the overall weaker side, but was able to beat the double Dorito fight, and take on a standard single Ordo. Also have done versions where the core capitals stay the same (2x Onslaughts + 2x Legion XIV) but use enforcers XIV as the cheaper distractions instead of cruisers.
This list isn't getting into phase fleet setups, like the unique ship and/or Dooms and so forth, or the heavy fighter spam utilizing heavy d-mod Moras + Support Doctrine + Derelict Operations.