Just the idea of a Linux phone! Use what you know and love, same code, same quirks, same features (man, how I hate feature inconsistency).

This is why it felt weird to me that there were special distributions at first, but it seems like we're finally mainlining (pretty standard Debian, Arch, Manjaro), which is nice.

It seems like GNOME shell is also being adapted, which is exactly what I wanted to see. Hopefully some other DEs and large apps will follow.

Agreed, Mobian is an awesome OS for the Pinephone. When it supports MMS I would feel comfortable using the Pinephone with Mobian as a daily phone.