My thoughts on the Factions, based on previews and mechanics:
Crab - Strong Military, weak Political; designed to Defend and bring back lost Holdings (I am expecting something similar to the Martell faction for AGoT)
Crane - Weak Military, strong Political; THE go-to Offense Political faction, with the ability to push away Military attackers and Honor their high Glory personalities for the win
Dragon - Mediocre Military, mediocre Political; will be dealing with a lot of Limited Personalities, but will have cheaper people over all so you can invest Fate in them
Lion - Strong Military, weak Political; cheap Personalities with low Skill but lots of blanket buffs (see their Stronghold)
Phoenix - Mediocre Military, mediocre Political; strong Defensive abilities with a good Denial sub theme
Scorpion - Weak Military, strong Political; most effects will key off of having less Honor than your opponent, and neutralize individuals
Unicorn - Strong Military, weak Political; relies on heavy forward momentum and their Conflict deck to win on the offense, with no defensive tricks.