Thanks for your feedback!
Just to be sure... you mean to change the active note, e.g. with Ctrl+Left/Right? That does indeed sound reasonable. I will create a feature request for it.
There will be two new commands then (e.g. Tabs: Select tab left/right) you can assign keyboard shortcuts to.
I will describe how to do this later. At the moment there is a small limitation in the app itself.
Spoiler: You have to patch the keymap-desktop.json in the user profile manually.