- I couldn't find a good enough e-mail client, so did what every Linux user I know do and used webmail. That means you lose speed and features.
- Dual screen support for different DPI is non-existent in most distros, and has to be hacked with xrandr scripts to work in other distros.
- Audio or Bluetooth not working
- Very messy to install software. The native "App Store" wouldn't work or connect, so had to resort to shell commands.
- Lack of suitable productivity software (which you mentioned).
As long as nobody wants to offer a complete Linux solution with hardware, operating system and productivity software, then it will continue to be like this. That's the problem with OSS, everybody wants to blame each other and nobody wants to take responsibility and deliver a complete experience to users.