Disappointments in the book(s)

We all LOVE DCC but there has to be a few things that have disappointes you. I have just three:

1. How Frank Q and Maggie My story ended. I felt like it could of been better if Maggie tried to use her find Crawler quirk.

2. We are seeing less of Mordechai as the story continues. I do realize that they are getting to floors that will be past him but I do miss early Mordecai.

3. On Book 8 Donut did not drive a race. I know she controls the pedals but I think it would have been comedy gold for her to try to steer.

I'm curious what yours are.