No worries at all. Appreciate that you like how it looks. I really wanted the feature you mention to be good but alas it is half baked. In fact I have been waiting for Apple to add enough shortcuts to the Tab Overview that it is useful. Right now I have things that I can do with my extension but can't with the Tab Overview :

- I can filter tabs down but can't select them without my hands leaving the keyboard.

- I can't switch between two tabs really fast. My workflow often involves alternating between two tabs.

- Tab overview does not have multi-window support which is important to me as I am often working on multiple monitors with multiple windows open.

- I can't quit, pin, mute a bunch of tabs using the Tab Overview with just keyboard shortcuts.