First of all, I love the new Opera Neon, It's a very interesting, and well designed browser.

Anyway, While using it I had quite a few Ideas I thought would make the browser even better.

The Tabs

• I wish the open window tabs had a resize, and drag feature. That way we could manually re-arrange the windows however we like. The inability to resize, and move the Windows makes it feel, limited? I guess that word fits.
• The ability to stack windows (In Addition to the split screen, would be great!) For example a user could organize a number of tabbed windows (different open websites), within a parent Window. This would help with users who always have dozens of windows open. The desktop style icons are great, but I think adding more than one way to organize, and access your opened tabs/windows would help users be more efficient.
• I would like to see user defined hot-keys for common actions. (Think Vim). Ctrl-Tab Currently tabs through your open windows. Which is nice, but I'd also like to see a hot-key for opening a list of currently opened windows.