As a fan of Liella I enjoyed it. The first years really came into their own as they go through their second year, and Wien turned from being an afterthought to a character I can care about. It was totally worth it seeing Keke return to China after it was teased in the very first season, and for her arc to come to an end. That being said, I do think it was silly how they went and won Love Live again without any sort of obstacle. Makes them out to be untouchable, and lacks conflict. But the internal character conflicts and the Shanghai arc morethan makes up for it. If you are a fan of idol anime, especially if you have a passing familiarity with Love Live, I think you'll like it too.