So looking at all of the factions I can’t help thinking that, while all Factions have useful tech and classes, Synedrion is better than the others in multiple ways:
Best Tier 1 Sniper Rifle
Best Tier 1 Assault Rifle
Stun/Capture Weapons (Hera/Athena)
Spider Drones (Drops Mic)
Best Sniper Armor
Poison/Acid/Fire Resist Vest
Aspida - Fast Stun/Capture AND Medic?!?!?
Infiltrator (Dorps Mic again)
Their tech deals with literally everything:
Dismember/disable enemies at range? Pythagoras VII at your service.
Armor? Blast it off with Spider Drones.
Capture? Got it covered. Looks like meat is back on the menu boys!
Survive Status effects? No problem.
Element of Surprise? Yep, all stealth all the time and it goes with almost every other class.
Keep those pesky Pandorans in their lairs? No Mist = fewer attacks with less force.
Accelerate your tech acquisition? Siri, how do I build a viral sniper rifle?
Want something better than that? Go get that Ancient tech and get to the endgame.
What do you find potentially more valuable than the above in the other factions?