For me, it is a must have! I use opening bookmark folders directly into tab groups every day. It helps me access quickly the files I need and close them as comfortably as I have opened them. It is a great add on!

Thank you! Idea: if we have multiple tab groups open, ability to save them so they can be 1 click loaded in current or new window.

EDIT: Thanks for the response! While your recommended addons come close, they are only able to save and restore normal tabs. If my tabs are inside a tab group, all that happens with those addons, is that a blank new window without any tabs gets "restored", signalling that there is a lack of tab group implementation. I was curious whether something like that is achievable with your approach.

If you manage, please consider checking the following: Opening a single bookmark folder works marvelously, but if one tries to open a root bookmark folder (that is storing more bookmark folders inside), only the bookmarks that aren't in subfolders get opened. Secondly, if one tries to open a bookmark folder that is located inside the root bookmark folder but also stores bookmark folders itself, nothing gets opened or only items in primary folder get opened.
EDIT 2: Consider adding ability to pin a recent tab group so that whenever user clicks the extension icon in toolbar, there are tab groups pinned by default that they may open anytime.