This is a really good addon! Love it.

Few things to consider:

Adding bookmarks to the quick dial is not intuitive. I tried doing it through the bookmark menu, it does not work. The context menu option "New" didn't make sense for me until I watched the video and saw it was part of the Quick Dial addon. Rename it to something more obvious like "Quick Dial Add", just like how the other context menu option is "Quick Dial Settings". Or maybe add a big "plus" button on the QD page.

The Title Border size is off by 1 if it's not transparent. There is a thin line between the Border of the cell and the Border of the title. I have to set the Title Border Size to -1 to fix it.

If I turn down the opacity, the menu settings goes behind the tiles each time I edit a setting.