I feel an essential feature i believe this extension needs is the option to allow saving closed tabs exactly in the way they were closed, the same way multiple Firefox profiles generally allow you to, i don't think it should be a compulsory part of the user experience but it would be nice to have that option, since you could remove a tab and store them basically in this limbo state until you need them again, thereby not re logging every time . All in all an excellent extension i definitely think this is a move in a positive direction and do encourage others to try it out. The add-ons helps you isolate your online profile and it definitely lives up to what it pitches.