Classes restrict weapons, so do not force one of every class: July character analysisMinor spoilers
Check class weapon access, then accuracy, damage through defenses, and mobility. Favorite characters can change jobs; your army need not include every class.
Original video: “Fire Emblem: Fortune's Weave latest information and new character analysis—2026.7.22,” Bilibili creator Koudaimi ag, watch the original video.
Classes determine weapon access
Your class determines usable weapons. 
Hunter uses swords and bows, while 
Soldier uses swords, lances, and axes. Training proficiency alone does not let you equip a weapon without entering a class that permits it.
I favor roles that counter in melee and handle fliers at range. Previously, many people could carry both swords and bows. These class restrictions require rethinking who covers those jobs. Check mage permissions too. In 
Bonaventure's demonstration, 
Diviner uses swords as well as magic. The label “mage” alone should not narrow your assumptions.
Why the two lieutenants follow their leaders
Bonaventure commands great respect in Salamis and supports 
Theodora's succession. In conversations about the country, he values its people beyond territory and power. This wise general carries its history and knowledge in his mind and stands beside the queen with judgments of his own.
Buccar once followed 
Leda's father, calls Leda a princess, and accompanies her revenge. He looks like a veteran axe fighter, but his relationships hold loyalty to an old companion and complicated emotions. Neither simply fills a mage or axe-user slot.
Missing accuracy and failing to break defenses
One character has enormous Strength and impressive axe damage, but lacks Hit and Speed. A miss means no damage. Another is fast and attacks twice but has so little Strength that neither hit penetrates Defense. That kills nobody either.
So I would not focus only on Strength or Speed rankings. The first needs accuracy; the second needs Strength. Give Strength resources to a favorite fast character. Once power catches up, mobility and follow-ups can deliver their benefits.
Peter's eyesight and personality
Peter and 
Cai are like brothers, two boys leaving their village. Hunting since childhood gives him excellent eyesight, even for stars, but his reserved, timid personality makes his talents hard to express. Alongside 
Tialla, he reveals how this young group relates to one another.
I am less interested in a pure archer role and would rather combine ranged attacks and melee counters in one unit. Choosing him therefore starts with whether you want to reserve a dedicated archer slot.
Esmeralda's class options
Esmeralda is a fishing-village daughter with great strength. 
Dietrich saves her from being sacrificed to a sea monster, and she travels with him afterward. Her inherited lance, design, and meeting make a strong impression.
My concern is armored Movement. Early durability helps, but once everyone gains damage and Avoid, slow units can fall behind. If training her, I would try flying or riding, moving a favorite character into a role that keeps up.
Keep damage and mobility without forcing class variety
You do not need one of every class. If fliers are useful, bring several and fill remaining slots with damage and needed tools. Avoiding duplicate classes for its own sake can displace roles that already work well.
If you like a character but dislike their starting class, choose a better fit. What matters is reaching needed positions, hitting reliably, and dealing damage, beyond how many different classes appear on the roster.