Went over every FE lord for fun, real talk edition:
Marth: "Kindhearted, but idealistic. Very humble and charming."
Oh boy, I wonder who that describes. Answer: just about every FE lord cribes from him in some way shape or form. Marth as a character doesn't impress, and with the exception of Shadow Dragon's stellar dialogue for him, is kind of bland. What carries him for me, is his Smash Bros incarnation, who's power, style and grace left a far bigger impression than this dork ass due. It's kind of amusing when dudebros dunk on Lucina for being a "female Marth" when in execution, she's a totally different (better) character.
Alm: Basically a 2010 anime sue protagonist. The chosen one, loved by all, always right, cool and stylish but hopelessly humble. Suffers no major loses. As shallow as characters get. I like how they shaved away his warmongering tendencies because they couldn't have him having any flaws. Literally carried by the localization, because Kyle's voice acting makes him incredibly endearing. Still sucks overall, though.
Celica: Promising as fuck, and hopelessly squandered to make a point, a point that is utterly juvenile (Alm = Good, Celica = Bad). Everything about her outside of her characterization is fantastic. Well, she's kind of a mediocre lord gameplay wise due to how badly the maps screw her over.
Sigurd: See Marth, but the game is actually written around that fact, and his character arc is ridiculously ambitious.
Seliph: He's okay.
Leif: No comment.
Roy: Hopelessly bland and generic. At the center of the story but doesn't manage to make me a notable impression on me. To me, Roy is the absolute worst Lord in the franchise because he's a nothing character. I'll take misguided and poorly written over... Roy, any day of the week.
Lyn: She's okay. Her introduction is great, but she doesn't really impress after her arc. FE7 at that point is just Lyn chasing after the "boyz"
Eliwood: A good lord.
Hector: A great lord. Maybe not the deepest, or the best gameplay wise, but Hector is still a strong lord relative to the others.
Eirika: She's actually fairly well-written. Her characterization just goes against the typical power fantasy the series is known for, causing frustration at her (pretty justified) actions.
Ephraim: He's actually fairly well-written. Nobody seems to realize he has a strong arc to go along with his war-mongering ways.
Ike: GOD
Micaiah: Promising, but frustrating in execution. It would be really cool if FE10 tried to move away from Ike and focused on Micaiah more instead of setting her up to be "wrong" and killing her presence by the final chapter. Still, the subversion on "maiden who fights honorable" is neat.
Chrom: Chrom is pretty good
Robin: He's good. I don't think people are really thinking it through when they make the argument that he's bad relative to other FE protagonists, because he really just... isn't. Robin's a pretty fun character, with a personality that makes their supports great (they have so many hits), and they work as a good supporting protagonist / buddy cop to Chrom.
Corrin: One of the most low-ambition lords in the franchise. She fits into a generic shonen protagonist with a heart (BR). In Conquest she had promise because having a lord actually react to the atrocities of war is interesting, it's just the writing is simply too bad to support that kind of character. Chapter 15 cratered any chance at her having any potential. Any argument levied against her that starts with "WELL, THEY'RE THE AVATAR SO AUTOMATIC BAD" is trash. I mean it.