I'd prefer if the tab groups could be visible on the tab bar itself, but after a small amount of testing, it seems pretty easy to use and hasn't lost my tabs on close or restart. I'll just need to get used to hitting F2 to check in on my other tabs/remember they exist

This is a great extension, it reminds me a lot of Trello, very nice UI and so far has been very stable.

There are a few things I'd like to see improved:

1. Needs a feature to export / import tab tiles for safe keeping / backup.
2. Would be useful to have an option that would highlight duplicate tabs, it's easier than ever to have the same tab open in several groups, so having this feature would be pretty useful.