All great feedback, thank you!
Adding the ability to view the full title is an easy fix, I'll include that in the next push.
The history and bookmarks point is a good one. It's possible to specify those as optional permissions for the extension, so users could decide whether or not to enable them. One idea that motivates the project is that it's easier to close tabs when you know you can always get back to them quickly, so history and bookmark search are necessary to enable that mindset. I'll ruminate on this one a little more.
The idea of using it without replacing the "new tab" page had never occurred to me. Let me think about that one, too.
Thanks again!!
Some gripes:
I wish I could just use it standalone without it replacing the "new tab" page.
I wish I could view the full title of a tab, maybe on hover.
I only want to use it to manage tabs, not history or bookmarks, so I wish I didn't have to grant those permissions.