Got my Pixel 6a and directly flashed GOS. Here are my first impressions:
1) eSIM activation
This wasn't possible, because it will scan a QR code (which I don't have, provider fraenk). Had to reflash original firmware and activating eSIM there. After back to GOS works there too.
2) missing localizations
All GOS specific settings are English only. Same with the GOS apps and the PlayStore. Is localization planned or already done, and I can help to translate into German?
3) dark themes missing
Contacts and sms apps missing dark theme. Sms also warns that Android 13 is to new and may not work. Installed Simple SMS and Contacts as workaround.
4) quick settings / power menu on lockscreen
Is there a setting to disable this for lockscreen? Should be only for info and unlock, nothing else.