Having divine connection a deity that grants you power does something; it does that irrespective whether you're ordained priest of some religious organisation or not. Being noble doesn't really do much by itself. What do you imagine it doing? I mean perhaps you could use it to impress some people or get out of legal trouble in some countries, but those seem far too situational and setting dependent to be codified rules.
That's your issue right there. Nobility could get you access to a lot. All those expensive tutors and fancy upper class learning.
Skill training
Weapons training
Magic training
Languages
Connections
Secret techniques
Really it D&D were sensible, their would be 3 skills classes: the noble, the scholar, and the rogue. In fantasy, the skill monkeys are street rats, aristocrats, and library nerds.
D&D just attempts to kldge it by forcing every primary skill user to be a rogue and aceept Thieves Cant and Sneak Attack.
Very well, thank you for asking!
Can't see it. There is littleary no Wisdom in fighter nor its subclasses.
D&D 5e has no morale rules, but battle master can use their rally manoeuvre to bolster their allies or commanding presence to inspire NPCs via a skill check. I probably wouldn't make such a thing part of the base class, as many people might want their fighters to be gruff slayers to whom such a feature wouldn't fit.
Dind ding ding
That's my point.
D&D fans have contradictory desires
1) "I want fighters to be big gruff slayers who have no out of combat skills"
2) "I want fighter to represent knights, nobles, mechants, generals, gladiators, and merchanaries that have training in exploration, social, war, and downtime settings"
If Fighters are supposed to be knights, they shouldn't have to spend their background on to get Presuassion. Clerics and Arcan can get Religion and Arcana from just class.
If fighters are supposed to include warriors of brain, they should have features of mind.
But D&D fans are two faced about it. They really want fighters to be Da Big Stupid. And if fighters optimally can only FIGHT FIGHT FIGHT, caster have to be nerfed in combat.
Thats the weird part. Wizardfans insisting fighters have no brainpower end up nerfing their wizards 2 editions in a row.