I just switched to firefox and one issue that I'd like to change is to make it so when I middle click on the backspace or refresh buttons, it doesn't automatically take me to the newly created tab. I had this issue with middle clicking links in pages and middle clicking on bookmarks, but I managed to fix both of those. I went to about:config, searched inbackground, and changed all those values to true, which as I said fixed the issue for middle clicking bookmarks, but there doesn't seem to be an option listed for backspace or refresh.

Thanks!