I'm glad they decided to bring back Bookmarks, but there is still a lot of work to be done.
One thing I still miss A LOT is using the keyboard to open bookmarks.
In version 12 (still my main browser) you could access the bookmark menu with <alt>-b en then use letter keys to go through the folder structure to select and open a bookmark.
Which is VERY much faster than using a mouse...

So for me that is one of the main reasons to keep using version 12