User blog comment:Pochichi/Aikatsu Stars Season 2... CONFIRMED/@comment-3487190-20170109114110

>  have same concept like original Aikatsu, the new school will be rival academy and the new idol obviously will come from the new school

I think this is the issue. This could be a problem for the following points:

1) Copycat issue, but it's probably secondary.

2) What the original Aikatsu! series failed to do is a comparison (or competition) between multiple schools including Naniwa, Étoile and many others. The discontinuation of season 4 missed the chance to gather all schools together to do some big events, which would have been a better ending than Starlight Queen Cup.

Similiarly in this series, there's existed Shiny Academy as well as some other schools, I think those schools could have some major spotlights in the following story. If it's just a copied Dream Academy, it'd be doomed to fail unless the story is rich enough.

3) Staying in public schools but have professional trainings in idol agencies, which is the oridinary route of idols and the storyline of BANDAI'S other idol series Drefes! doing now.

As for Aikatsu!, there has actually pointed out some background girls who don't attend idol schools but still want to join the auditions. I mgiht rather be interested in that part than just another rivalry between schools.Only if it's some kind of agency like D4pro from Drefes! series.