Alright, I had a lot of fun with this premiere. I think they have done a decent job with the adaptation given that there are going to be some technical limitations. One of the things that I really enjoy about the manga is how wildly different the art style can be between their "lady" forms and their "rocker" forms. In the anime, they have definitely played with that to some degree, but not to the same degree. I think a portion of that is probably due to the use of CG during the performance segments. You just can't be as loose with the style when you are animating motion capture like that.
I loved the moment they met and how they animated at least a whole day passing by in the blink of an eye for Lilisa @rikka@ani.social
Finally, the bits at the very end of the performance, after Lilisa finished her guitar part and then when Otoha is gloating, those are when the art style got closer to the manga:
Overall though, I really liked this premiere. It was great to see that ~~Band-Maid made an original song for this episode~~ the song by Lite that they were playing was a good one. For a music-themed series like this, if the music doesn't hold up, then everything else is going to fall apart, so this is a good start.