Regardless about how JN's battles are going. It get's attacked for being "cheap fan service" but this series actually bothers giving characters returns that concludes their stories and they're all pretty good.
- Lillie once again became the only main character to achieve her goals and the Aethers got a great conclusion and found Mohn
- Paul got enough prestige to become a Gym Leader and start training
- Iris became a famous Champ and beat Alder and went kept up with a strong opponent in the PWC
- Serena is known across Kalos and Hoenn as an idol and even started a duo. Even making people smile and inspiring them like Aria
- Brock is getting even further with his goal and got a Blissley
- Gary is catching legendaries and improving his skills as a researcher within in Project Mew
You would almost think the series was concluding will all of this but instead they actually cared about wrapping up and tiling loose ends with these characters goals and ambitions.
Id honestly say pretty much every character is wrapped up aside from May and Dawn winning a grand festival, Cilan becoming a S rank Connosieur and Max shown to have caught Ralts.
Sophs is becoming a great astronaut
Clemont is a great inventor and Gym leader
Bonnie is pretty wrapped up nicely too for as she is
Serena had moved past wanting to be Kalos Queen so that's redundant, and is making her dream of making others smile through her performances come true
Mallow has opened a famous restaurant with acclaim
Kiawe is one of Alola's strongest and set to succeed Olivia as Kahuna
Lana made the the largest bubble she can with Primarina's Z move and has become well acquainted and one of the Seafolk
Misty is a strong Water type master
Iris is a strong Dragon type master even if she doesnt consider herself one
Brock has become a great doctor
Tracey is living his life
Chloe is set to find her path and Goh is set to resolve his arc with Mew in JN
Pretty much wrapped up every companion storyline and set a clear path for them achieving their dream and continuing their work, Heck even Cilan and Max dont need to do what I mentioned to feel rounded off and complete, only May and Dawn need to win a Grand Festival already