With Modeler, we want to move to the next or previous tab by clicking small arrow buttons (also short-cut appreciated) but not by clicking a tab.
Sophisticated editors like Eclipse and IntelliJ have this useful feature. See below:
It would be nice to have the buttons indeed. However, I don't know if you are aware, but there are already keyboard shortcuts to switch between tabs:
Ctrl + Tab = move to previous tab
Ctrl + Shift + Tab = move to next tab
For an even nicer experience, map these buttons to your mouse so you can switch in a single mouse click (assuming you have more than 2 mouse buttons)
Absolutely! No more need to use Ctrl-F4, close current tab as crappy alternative.