I recently started using Opera and I didn't get one thing: why I can't see the links I added to bookmarks on Speed Dial? Do I need to add a website to the Favorites and to the Speed Dial to see them there?
So, my suggestion is to add another row in the Speed Dial called "Bookmarks" where all the bookmarks are displayed. It should be possible to reorder the sequence displayed there, or sort by name/date added/how many times site was viewed/etc; also, if some site is already shown on Speed Dial, move that link to the end of the list.
And for those that don't like this, add an option in the Settings together with "Show Speed Dial suggestions": "Show Speed Dial bookmarks".