@sgunhouse The way it works with FVD Speed Dial's groups and Vivaldi's speed dial folders is pretty nice. You have the folder/group names listed at the top of the start page, and when you click a folder/group name, it switches the speed dial section to a different page. It's kind of like on Android and iOS when you swipe left and right between home screen pages.
In this case, there are 2 things that could be considered better than in Opera. One is the folder/group pages are full-size where clicking on a folder in Opera shows a content-sized preview overlay. The other thing is that in Opera, there's no folder list at the top of the page to easily switch to different folders. In Opera, you move the mouse to the folder the actual folder which could be a lot more eye and mouse tracking. I personally have no problem with either way, Vivaldi's way seems nice to me.
As in, Opera's UI for speed dial folders could use some visual changes/improvements (preferable as customization options).