Naomi looked like a fish on dry land during that performance. I hope she's more comfortable now.
That's how rhythym guitarists look like. With most bassists it is the same, if they just care about keeping up the song structure
So you want two of the best singers (Ai and Sako) to hand over their lines to a mini Hacchake squad?
That is what I mean, right. It won't work with every song of their repertoire, but they could rearrange some, for example Starting Over, which consists basically of group vocals. But the best option would be just writing new songs, that fits the three.
I only want this for a BAND version, of course.
They're too cool to play shit like 'Shiny Road'.
I find Shiny Road okay, nothing more but nothing less either. They have worse songs.
To give a serious answer: Those musician are probably paid by effort. So learning a bunch of songs, which would occupy a lot of time, will be expensive. And I can imagine lot of fans want the 'traditional' performance without a band. Not sure here though. It is a mistake to compare idol groups with 'regular' groups. PASSPO also has no rich label behind them.
At least DJ Hikaru provides some vocals too?
Well, yes. But sparsely. Most time she just nods her head to the music and encourages the audience a few times for participation. You know, 'Clap your hands' and stuff.