If there's one thing I'd strongly suggest, it's replicating the cue from Peter Tomarken's days when the main game ends. It feels rather empty without it.
Alexa should've passed while she could've. There was more of a chance of him getting a whammy than she had catching up. (which in her case was basically 0%)
Where's the cheesy animation for the whammies? I wanted to see a whammy breakdancing across that woman's podium carrying a boombox like in the old days.