1. Actually tabs are very useful (that's why we have them in most of web browsers ). For instance, you are on a forum and you have to do some tests on the website. You need 2 tabs to switch between the website and the forum.
Tabs are also handy when opening several websites from a RSS feed.
3. Perfect will you try to add folders?
6. I would say 3 modes is perfect lol:
- hide statusbar only
- hide statusbar and navbar
- fullscreen: no statusbar, no navbar, no omnibox
7. Available with JumpGo too.
BTW: I added license on github.