I have a suggestion for a future version:
What about jumping to the top of a webpage by clicking once with the left button on the tab?
Before I recently changed to Firefox (all in all it's more comfortable) I've been using Opera webbrowser for a long time and this is a feature I really liked.
In the German menu this is called "Durch Anklicken des aktiven Tabs zum Seitenanfang blättern" as you can see in the picture below. Maybe one of you knows better how to translate this correctly…