> The first question that pops into my head (being aware that this is a popular category of apps) is: when do people look at blank tabs? Whenever I open a new tab, it's with the intention of entering an address or a search term, and any content would be an unwelcome distraction.

My "startpage" is a four-column list of stuff I usually browse. And usually I sit with my left hand at the left hand side of the keyboard, and with my hand on the mouse on the right. Doing CTRL+T then clicking on where I wanna go, is usually faster and less movements needed than having to manually type the one or two first letters.

I tried sometimes to put "widgets" or other things (like widget on a smartphone) but it's true what you say, it's an unwelcome distraction. But a couple of simple lists seems fine, for me.