A lot of possibilities. I'm just glad the pace of his progression isn't quite that standard.
Yeah, usually you'd already start seeing "the diamond in the rough" reform and push towards new heights (80 chapters behind, damn, that's a lot), but Junpei hasn't really grown much, has he? True, he understands his limits and capabilities a bit better, and has more insight when it comes to people around him, including his rivals, but he's still very wild and untamed.
I'm kinda worried for him. It's like you said, it feels like he's not born for classical ballet, his head is always in the clouds, he yearns to be free, so a lot of aspects of classical ballet would be too constraining for his deeply passionate nature.
Take the upcoming competition: it's not like there's no place for personal touches and expressiveness during classical pieces' variations, but they would never be more important than impeccable technique, precision, and firm adherence to the script. And I'm like 80% sure he'll go off script again. Which will definitely leave an impression on the audience but won't be appreciated much by the judges.
Then again... from a purely narrative standpoint, I kinda sorta suspect we'll be having another conveniently placed time skip for Natsuki to reach "romanceable age" (I hate myself for even writing this), so they'll have to be separated for a while. And for that, at least one of them should win a year-long scholarship.