If you were a citizen of the Clover Kingdom would you be satisfied with the current Wizard King. EOS
Personally? No, I wouldn't be.
From the perspective of a Clover Kingdom citizen Yuno seems like the much better candidate.
- Yuno was the Vice Captain, and Wartime promoted Captain, of the most popular and decorated magic knights squad
- During his first six months as a magic knight he contributed more stars than anyone in his squad
- During the previous Elf crisis he was seen rescuing multiple people and contributed heavily to the final conflict
- During the most recent conflict he performed magic on a scale only previously seen by Julius, saving countless lives in the process
- He then performed an even more impressive piece of magic that allowed the Clover Kingdom to actually fight back
- He defeated a Lucius clone singlehandedly under his own power, no AM powerups or help
- He fought God Emperor Lucius alone and successfully held him off while Asta was being healed, with AM powerup
Compare this to Asta:
- Member of the least decorated magic knights squad
- During his first six months as a magic knight he contributed more stars than anyone in his squad
- Due to Sekke people had doubts about the legitimacy of the stars he earned
- Asta and Yuno's quick clash isn't really sufficient proof that no shady business happened, just a quick example of strength
- Only two big feats in front of the general populace
- Beating the Demon
- Assisting with beating Lucius
- Nearly killed by God Emperor Lucius
- Was on trial for being the possible cause of the Elf crisis
- Absolution doesn't change the fact that he was publicly seen as a possible enemy and devil user. That's a hard opinion to overcome even if it's eventually disproved.
- He showed up late to the Final Battle
Any other feat performed by Asta will simply be word of mouth to the Clover Kingdom. It's not something that can actually be proved to them. They'd have to trust the word of the Magic Knight Captains.
They would also have no idea how instrumental he was in forming relationships with the other countries or ending the conflict with the Elves.
It's certainly not impossible that members of the public would believe in Asta and the other magic knights, but with Yuno's feats front and center alongside his position as an actual captain it feels like he's simply the better option.