Hi everyone,
I've thought about adding shortcuts as an item in Mac (top) menu bar, like 'Bookmarks' in Chrome or Firefox. It could help gaining some screen space by making them quickly accessible while keeping the sidebar hidden. This would be really nice especially using the Side List View on little screen laptops (e.g. rMB, 13" rMBP) as you'd see more details in columns (tags, etc.).
Cheers,
Frank