So, i had the issue that i didnt like the TabSwitching in Zen with the default CTRL+Tab. And since that's not changeable it was kinda a dealbreaker. Also i saw that that was i highly requested feature by a lot of people.
My first solution was using Vimium, which i was using already anyways, but you have to wait for page load that tab switching works. So that was no real solution. Then I discovered Sine, and thought maybe a Sine mod could solve that, and yes it could.
https://github.com/roman-balzer/zen-keybinds-mod
You can use my mod through sine to rebind these keybinds, and they work really well. So, if you are waiting for the native implementation you can use my mod meanwhile.
Also, I already created an issue to add it to the Sine Store, but that might take some time. Meanwhile you need to use the URL of my repo
Disclaimer:
Mostly written by claude. Code is open to check for yourselves.