My speed dial looks like this:
http://sta.sh/0bt8dx0hv6c
Each link is for a different artists page like artist01.deviantart.com, artist02.deviantart.com, and so on.
All with the same icon, no labels, searching for someone is a nightmare.
I think the main problem is that bookmarks and speed dial are nearly the same thing in current implementation.
In Opera 15+, speed dial has been designed as a way to replace bookmarks. But there were some flaws, you all know the story, and they decided to re-implement a "bookmark" feature. But IMHO, the strategy is now very confuse for a lot of users.
Kroppy, from what I see in your example, if you want to follow Opera's "new way of doing things", you should use bookmarks for your deviantart pages.
If you have a lot of things you want to store, to differentiate, to search and find later, different pages from the same website, etc... you should use bookmarks.
SpeedDial should only be used for a very (very!) few number of links, the most importants, the one you check 50% of the time when you open a new tab. All the rest should now be stored in bookmarks.
This is the way I see things, and it may explain why Opera does not implement preview again in speed dial: if so, why would we need bookmarks?
But I agree, there must be a way to optimize all this, it is too confusing for the moment. SpeedDial and bookmarks must really differ, or merge.