If she would've done a follow-up album, it would have to have been done in the vein of Back To Black. I love the sound they achieved on that album.
There was nothing from a live standpoint that impressed me about her, unfortunately. Not that she could never sing live, I just never saw it.
Liz Phair was never a great live performer, yet her early albums were respected by critics despite that.
But Liz Phair also had crippling stage fright. Kinda different from Amy Winehouse.