Improving the "Back" button on new tabs

[RSNTravis]

I frequently browse by opening new tabs. When I am done with the tab, I frequently look for the back button in the browser, expecting to get back to the original tab... which is greyed out and unusable, because I'm on a new tab with no "history".

I suggest that the back button on a new tab should close the current tab, switching focus back to the original tab it was opened from.

If the new tab has a browsing history (so it has been through a couple pages) it would be usable like normal, until it gets back to a point where the tab has no history/pages to retreat to. In this case, the new behavior would occur.

In conditions where the new behavior would occur, the regular back icon "<" would be replaced with a different icon "<" with an "x" for a superscript (or similar), so that a user knows they're about to close the current tab to go back to the original.

[lfisk]

@RSNTravis Not sure if this will do exactly what you want, but I use it A LOT while browsing kinda like you do to get back to a much earlier tab. Default on the keyboard is "4" (or num-pad) or after you close the last tab and now want to get back to the beginning tab, click on the current tab.