Can the height and style of tabs be adjusted?

I adjusted the width of the vertical tab in Settings, but it doesn't seem to work. In addition, can the tab style provide multiple choices? The default is that the tab is rectangular, can it be trapezoidal, just like this

You can have square or round. Not trapezoidal.

Which Preferences option did you change to what?

Which dimension of which kind of tabs do you want to make larger?

("Vertical" tabs to mean means ones down the left/right side, but I'm not sure if that's what you meant when your screenshot shows what I'd call a "horizontal" tab, but that's also from another program so I don't now if it was meant to represent what you're seeing in Opus or just the style of how it's drawn.)