Thanks for the feedback. So in reverse order:
1. You can actually rename sessions. Just double-click on them or right-click -> edit. (Only sessions saved as bookmarks not those auto-saved that can be removed after a certain time)
2. Support for pinned tabs will be added for sure. Should be available in the next release. Mute information... guess I might be able to add that as well.
Once all the suggestion are implemented if you're happy about them remember to update your feedback score.
Thank you again.