That doesn't appeal to me. Bookmarks are quite straightforward and clear for things I don't use every session, most other things open straight up. My wife just uses the address bar dropdowns to get where she wants for recently used things, I imagine that can show a decent number of sites without much faffing with pictures or whatnot.
As long as it's inclusion doesn't slow things down, make the thing take even longer to load (just in case that wasn't included in my previous condition) or stop me using the standard old ways, I approve wholeheartedly of them adding options.