The ability to disable the thumbs will be in one of the next versions, along with the option to configure other columns. (so you're not ignored, it just takes some time)

I made this thread sticky and I would by grateful if others would also post their favorite settings. That'll help us to adjust the default settings!

Just to point that out: In canngas screenshot you can see what we call the breadcrumbs, (All > Porsche > 911 > 997 > Turbo). You can use them to navigate the whole board structure, even with the boards tree closed.